./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:00:55,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:00:55,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:00:55,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:00:55,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:00:55,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:00:55,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:00:55,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:00:55,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:00:55,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:00:55,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:00:55,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:00:55,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:00:55,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:00:55,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:00:55,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:00:55,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:00:55,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:00:55,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:00:55,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:00:55,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:00:55,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:00:55,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:00:55,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:00:55,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:00:55,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:00:55,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:00:55,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:00:55,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:00:55,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:00:55,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:00:55,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:00:55,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:00:55,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:00:55,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:00:55,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:00:55,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:00:55,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:00:55,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:00:55,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:00:55,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:00:55,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 03:00:55,702 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:00:55,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:00:55,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:00:55,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:00:55,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:00:55,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:00:55,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:00:55,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:00:55,705 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:00:55,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:00:55,706 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 03:00:55,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:00:55,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 03:00:55,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:00:55,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:00:55,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:00:55,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:00:55,707 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 03:00:55,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:00:55,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:00:55,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:00:55,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:00:55,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:00:55,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:00:55,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:00:55,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:00:55,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:00:55,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:00:55,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:00:55,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:00:55,709 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:00:55,709 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:00:55,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:00:55,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:00:55,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2021-12-16 03:00:55,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:00:55,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:00:55,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:00:55,949 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:00:55,950 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:00:55,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2021-12-16 03:00:56,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62131ac8/27ed967559bc4e92bdbd8785a8f6cb51/FLAGec3fa1eaf [2021-12-16 03:00:56,382 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:00:56,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2021-12-16 03:00:56,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62131ac8/27ed967559bc4e92bdbd8785a8f6cb51/FLAGec3fa1eaf [2021-12-16 03:00:56,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62131ac8/27ed967559bc4e92bdbd8785a8f6cb51 [2021-12-16 03:00:56,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:00:56,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:00:56,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:00:56,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:00:56,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:00:56,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:00:56" (1/1) ... [2021-12-16 03:00:56,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f04b8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:56, skipping insertion in model container [2021-12-16 03:00:56,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:00:56" (1/1) ... [2021-12-16 03:00:56,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:00:56,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:00:57,035 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2021-12-16 03:00:57,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:00:57,048 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:00:57,084 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2021-12-16 03:00:57,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:00:57,103 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:00:57,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:57 WrapperNode [2021-12-16 03:00:57,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:00:57,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:00:57,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:00:57,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:00:57,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:57" (1/1) ... [2021-12-16 03:00:57,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:57" (1/1) ... [2021-12-16 03:00:57,165 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2021-12-16 03:00:57,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:00:57,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:00:57,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:00:57,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:00:57,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:57" (1/1) ... [2021-12-16 03:00:57,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:57" (1/1) ... [2021-12-16 03:00:57,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:57" (1/1) ... [2021-12-16 03:00:57,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:57" (1/1) ... [2021-12-16 03:00:57,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:57" (1/1) ... [2021-12-16 03:00:57,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:57" (1/1) ... [2021-12-16 03:00:57,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:57" (1/1) ... [2021-12-16 03:00:57,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:00:57,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:00:57,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:00:57,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:00:57,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:57" (1/1) ... [2021-12-16 03:00:57,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:00:57,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:00:57,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:00:57,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:00:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:00:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-16 03:00:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-16 03:00:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-16 03:00:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-16 03:00:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:00:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:00:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:00:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:00:57,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:00:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:00:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:00:57,293 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 03:00:57,364 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:00:57,365 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:00:57,600 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:00:57,609 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:00:57,611 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:00:57,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:00:57 BoogieIcfgContainer [2021-12-16 03:00:57,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:00:57,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:00:57,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:00:57,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:00:57,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:00:56" (1/3) ... [2021-12-16 03:00:57,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fd5fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:00:57, skipping insertion in model container [2021-12-16 03:00:57,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:57" (2/3) ... [2021-12-16 03:00:57,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fd5fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:00:57, skipping insertion in model container [2021-12-16 03:00:57,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:00:57" (3/3) ... [2021-12-16 03:00:57,620 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2021-12-16 03:00:57,625 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 03:00:57,625 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:00:57,625 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:00:57,625 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 03:00:57,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,657 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,657 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,657 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,657 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,657 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,658 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,658 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,658 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,658 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,659 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,659 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,659 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,659 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,659 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,661 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,661 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,661 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,661 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,662 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,662 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,662 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,662 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,662 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,663 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,663 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,663 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,663 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,663 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,664 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,664 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,664 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,664 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,664 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,665 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,665 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,665 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,665 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,665 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,677 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,677 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,677 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,677 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,677 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,678 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,678 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,678 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,678 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,679 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,679 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,679 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,679 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,679 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,680 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,680 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,680 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,680 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,683 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,683 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,683 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,683 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,684 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,684 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,684 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,684 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,684 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,686 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,686 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,686 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,686 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,686 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,688 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,688 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,688 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,688 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,690 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,690 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,690 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,690 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,690 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,691 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,692 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,692 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,695 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,695 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,696 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,696 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,696 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,697 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,697 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,697 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,697 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,698 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,699 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,699 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,699 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,699 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,703 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,704 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,704 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,704 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,704 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,705 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,705 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,705 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,705 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,706 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,706 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,706 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,714 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,720 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,720 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,722 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,722 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,722 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,722 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:00:57,724 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-16 03:00:57,773 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:00:57,784 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:00:57,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-16 03:00:57,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 364 flow [2021-12-16 03:00:57,860 INFO L129 PetriNetUnfolder]: 13/172 cut-off events. [2021-12-16 03:00:57,861 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-16 03:00:57,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 13/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 283 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2021-12-16 03:00:57,865 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 364 flow [2021-12-16 03:00:57,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 163 transitions, 338 flow [2021-12-16 03:00:57,900 INFO L129 PetriNetUnfolder]: 13/162 cut-off events. [2021-12-16 03:00:57,900 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-16 03:00:57,901 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:00:57,901 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:00:57,902 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:00:57,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:00:57,906 INFO L85 PathProgramCache]: Analyzing trace with hash -679452967, now seen corresponding path program 1 times [2021-12-16 03:00:57,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:00:57,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678936635] [2021-12-16 03:00:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:57,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:00:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:58,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:00:58,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678936635] [2021-12-16 03:00:58,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678936635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:00:58,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:00:58,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:00:58,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121705306] [2021-12-16 03:00:58,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:00:58,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:00:58,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:00:58,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:00:58,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:00:58,330 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2021-12-16 03:00:58,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 163 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:58,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:00:58,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2021-12-16 03:00:58,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:00:58,617 INFO L129 PetriNetUnfolder]: 58/423 cut-off events. [2021-12-16 03:00:58,617 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-12-16 03:00:58,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 423 events. 58/423 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1990 event pairs, 12 based on Foata normal form. 24/420 useless extension candidates. Maximal degree in co-relation 377. Up to 44 conditions per place. [2021-12-16 03:00:58,623 INFO L132 encePairwiseOnDemand]: 154/174 looper letters, 52 selfloop transitions, 10 changer transitions 34/223 dead transitions. [2021-12-16 03:00:58,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 223 transitions, 677 flow [2021-12-16 03:00:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 03:00:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-16 03:00:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2175 transitions. [2021-12-16 03:00:58,640 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-12-16 03:00:58,641 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2175 transitions. [2021-12-16 03:00:58,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2175 transitions. [2021-12-16 03:00:58,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:00:58,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2175 transitions. [2021-12-16 03:00:58,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.0) internal successors, (2175), 15 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:58,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:58,664 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:58,666 INFO L186 Difference]: Start difference. First operand has 157 places, 163 transitions, 338 flow. Second operand 15 states and 2175 transitions. [2021-12-16 03:00:58,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 223 transitions, 677 flow [2021-12-16 03:00:58,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 223 transitions, 651 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-16 03:00:58,674 INFO L242 Difference]: Finished difference. Result has 177 places, 161 transitions, 389 flow [2021-12-16 03:00:58,676 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=389, PETRI_PLACES=177, PETRI_TRANSITIONS=161} [2021-12-16 03:00:58,679 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 20 predicate places. [2021-12-16 03:00:58,679 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 161 transitions, 389 flow [2021-12-16 03:00:58,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:58,680 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:00:58,680 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:00:58,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:00:58,681 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:00:58,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:00:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1258678119, now seen corresponding path program 1 times [2021-12-16 03:00:58,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:00:58,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983633471] [2021-12-16 03:00:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:58,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:00:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:58,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:00:58,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983633471] [2021-12-16 03:00:58,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983633471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:00:58,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:00:58,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:00:58,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557588494] [2021-12-16 03:00:58,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:00:58,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:00:58,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:00:58,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:00:58,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:00:58,791 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-16 03:00:58,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 161 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:58,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:00:58,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-16 03:00:58,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:00:58,992 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][120], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), 214#(and (= (* 256 (div ~sort_label_is_null_1~0 256)) ~sort_label_is_null_1~0) (= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))), Black: 197#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true]) [2021-12-16 03:00:58,992 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2021-12-16 03:00:58,992 INFO L387 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2021-12-16 03:00:58,993 INFO L387 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2021-12-16 03:00:58,993 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-12-16 03:00:58,994 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][55], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 214#(and (= (* 256 (div ~sort_label_is_null_1~0 256)) ~sort_label_is_null_1~0) (= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))), 171#true, 27#L50-19true, 45#L44-18true]) [2021-12-16 03:00:58,994 INFO L384 tUnfolder$Statistics]: this new event has 99 ancestors and is cut-off event [2021-12-16 03:00:58,995 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2021-12-16 03:00:58,995 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-12-16 03:00:58,995 INFO L387 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2021-12-16 03:00:58,996 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][120], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, 149#L44-19true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), 214#(and (= (* 256 (div ~sort_label_is_null_1~0 256)) ~sort_label_is_null_1~0) (= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))), Black: 197#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true]) [2021-12-16 03:00:58,996 INFO L384 tUnfolder$Statistics]: this new event has 78 ancestors and is cut-off event [2021-12-16 03:00:58,996 INFO L387 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2021-12-16 03:00:58,996 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-12-16 03:00:58,996 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2021-12-16 03:00:59,036 INFO L129 PetriNetUnfolder]: 96/1168 cut-off events. [2021-12-16 03:00:59,036 INFO L130 PetriNetUnfolder]: For 344/353 co-relation queries the response was YES. [2021-12-16 03:00:59,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 1168 events. 96/1168 cut-off events. For 344/353 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 8901 event pairs, 22 based on Foata normal form. 3/1076 useless extension candidates. Maximal degree in co-relation 1692. Up to 61 conditions per place. [2021-12-16 03:00:59,045 INFO L132 encePairwiseOnDemand]: 160/174 looper letters, 35 selfloop transitions, 15 changer transitions 2/193 dead transitions. [2021-12-16 03:00:59,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 193 transitions, 565 flow [2021-12-16 03:00:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:00:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:00:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 788 transitions. [2021-12-16 03:00:59,048 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9057471264367816 [2021-12-16 03:00:59,048 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 788 transitions. [2021-12-16 03:00:59,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 788 transitions. [2021-12-16 03:00:59,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:00:59,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 788 transitions. [2021-12-16 03:00:59,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,054 INFO L186 Difference]: Start difference. First operand has 177 places, 161 transitions, 389 flow. Second operand 5 states and 788 transitions. [2021-12-16 03:00:59,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 193 transitions, 565 flow [2021-12-16 03:00:59,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 193 transitions, 554 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-12-16 03:00:59,068 INFO L242 Difference]: Finished difference. Result has 170 places, 173 transitions, 494 flow [2021-12-16 03:00:59,068 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=170, PETRI_TRANSITIONS=173} [2021-12-16 03:00:59,070 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 13 predicate places. [2021-12-16 03:00:59,070 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 173 transitions, 494 flow [2021-12-16 03:00:59,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,071 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:00:59,072 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:00:59,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:00:59,072 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:00:59,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:00:59,077 INFO L85 PathProgramCache]: Analyzing trace with hash 32438981, now seen corresponding path program 2 times [2021-12-16 03:00:59,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:00:59,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231763371] [2021-12-16 03:00:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:59,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:00:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:59,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:00:59,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231763371] [2021-12-16 03:00:59,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231763371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:00:59,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:00:59,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:00:59,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164251267] [2021-12-16 03:00:59,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:00:59,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:00:59,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:00:59,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:00:59,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:00:59,189 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-16 03:00:59,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 173 transitions, 494 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:00:59,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-16 03:00:59,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:00:59,407 INFO L129 PetriNetUnfolder]: 87/1198 cut-off events. [2021-12-16 03:00:59,407 INFO L130 PetriNetUnfolder]: For 333/347 co-relation queries the response was YES. [2021-12-16 03:00:59,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 1198 events. 87/1198 cut-off events. For 333/347 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8650 event pairs, 20 based on Foata normal form. 7/1151 useless extension candidates. Maximal degree in co-relation 1606. Up to 71 conditions per place. [2021-12-16 03:00:59,416 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 43 selfloop transitions, 10 changer transitions 0/194 dead transitions. [2021-12-16 03:00:59,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 194 transitions, 699 flow [2021-12-16 03:00:59,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:00:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-16 03:00:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 625 transitions. [2021-12-16 03:00:59,418 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8979885057471264 [2021-12-16 03:00:59,419 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 625 transitions. [2021-12-16 03:00:59,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 625 transitions. [2021-12-16 03:00:59,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:00:59,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 625 transitions. [2021-12-16 03:00:59,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,423 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,424 INFO L186 Difference]: Start difference. First operand has 170 places, 173 transitions, 494 flow. Second operand 4 states and 625 transitions. [2021-12-16 03:00:59,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 194 transitions, 699 flow [2021-12-16 03:00:59,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 194 transitions, 695 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-12-16 03:00:59,434 INFO L242 Difference]: Finished difference. Result has 175 places, 179 transitions, 576 flow [2021-12-16 03:00:59,434 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=576, PETRI_PLACES=175, PETRI_TRANSITIONS=179} [2021-12-16 03:00:59,436 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 18 predicate places. [2021-12-16 03:00:59,436 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 179 transitions, 576 flow [2021-12-16 03:00:59,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,437 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:00:59,437 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:00:59,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:00:59,437 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:00:59,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:00:59,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1926552705, now seen corresponding path program 1 times [2021-12-16 03:00:59,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:00:59,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192374862] [2021-12-16 03:00:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:59,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:00:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:59,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:00:59,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192374862] [2021-12-16 03:00:59,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192374862] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:00:59,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:00:59,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:00:59,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675413852] [2021-12-16 03:00:59,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:00:59,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:00:59,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:00:59,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:00:59,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:00:59,534 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-16 03:00:59,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 179 transitions, 576 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:00:59,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-16 03:00:59,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:00:59,694 INFO L129 PetriNetUnfolder]: 86/1158 cut-off events. [2021-12-16 03:00:59,694 INFO L130 PetriNetUnfolder]: For 482/497 co-relation queries the response was YES. [2021-12-16 03:00:59,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1860 conditions, 1158 events. 86/1158 cut-off events. For 482/497 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8198 event pairs, 28 based on Foata normal form. 11/1111 useless extension candidates. Maximal degree in co-relation 1218. Up to 105 conditions per place. [2021-12-16 03:00:59,701 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 40 selfloop transitions, 15 changer transitions 0/196 dead transitions. [2021-12-16 03:00:59,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 196 transitions, 783 flow [2021-12-16 03:00:59,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:00:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-16 03:00:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2021-12-16 03:00:59,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951149425287356 [2021-12-16 03:00:59,704 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2021-12-16 03:00:59,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2021-12-16 03:00:59,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:00:59,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2021-12-16 03:00:59,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,707 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,708 INFO L186 Difference]: Start difference. First operand has 175 places, 179 transitions, 576 flow. Second operand 4 states and 623 transitions. [2021-12-16 03:00:59,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 196 transitions, 783 flow [2021-12-16 03:00:59,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 196 transitions, 783 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-16 03:00:59,723 INFO L242 Difference]: Finished difference. Result has 180 places, 186 transitions, 702 flow [2021-12-16 03:00:59,724 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=702, PETRI_PLACES=180, PETRI_TRANSITIONS=186} [2021-12-16 03:00:59,724 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 23 predicate places. [2021-12-16 03:00:59,725 INFO L470 AbstractCegarLoop]: Abstraction has has 180 places, 186 transitions, 702 flow [2021-12-16 03:00:59,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,725 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:00:59,726 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:00:59,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:00:59,726 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:00:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:00:59,727 INFO L85 PathProgramCache]: Analyzing trace with hash -194425533, now seen corresponding path program 3 times [2021-12-16 03:00:59,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:00:59,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848568106] [2021-12-16 03:00:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:59,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:00:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:59,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:00:59,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848568106] [2021-12-16 03:00:59,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848568106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:00:59,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:00:59,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:00:59,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521149853] [2021-12-16 03:00:59,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:00:59,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:00:59,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:00:59,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:00:59,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:00:59,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-16 03:00:59,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 186 transitions, 702 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:59,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:00:59,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-16 03:00:59,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:00,000 INFO L129 PetriNetUnfolder]: 76/1141 cut-off events. [2021-12-16 03:01:00,001 INFO L130 PetriNetUnfolder]: For 608/617 co-relation queries the response was YES. [2021-12-16 03:01:00,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 1141 events. 76/1141 cut-off events. For 608/617 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7952 event pairs, 22 based on Foata normal form. 7/1090 useless extension candidates. Maximal degree in co-relation 1325. Up to 97 conditions per place. [2021-12-16 03:01:00,008 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 42 selfloop transitions, 15 changer transitions 0/198 dead transitions. [2021-12-16 03:01:00,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 198 transitions, 877 flow [2021-12-16 03:01:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:01:00,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-16 03:01:00,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2021-12-16 03:01:00,011 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951149425287356 [2021-12-16 03:01:00,011 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2021-12-16 03:01:00,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2021-12-16 03:01:00,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:00,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2021-12-16 03:01:00,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:00,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:00,015 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:00,015 INFO L186 Difference]: Start difference. First operand has 180 places, 186 transitions, 702 flow. Second operand 4 states and 623 transitions. [2021-12-16 03:01:00,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 198 transitions, 877 flow [2021-12-16 03:01:00,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 198 transitions, 861 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-16 03:01:00,023 INFO L242 Difference]: Finished difference. Result has 183 places, 190 transitions, 780 flow [2021-12-16 03:01:00,023 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=780, PETRI_PLACES=183, PETRI_TRANSITIONS=190} [2021-12-16 03:01:00,024 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2021-12-16 03:01:00,024 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 190 transitions, 780 flow [2021-12-16 03:01:00,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:00,025 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:00,025 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:00,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:01:00,025 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:00,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:00,026 INFO L85 PathProgramCache]: Analyzing trace with hash 707384734, now seen corresponding path program 1 times [2021-12-16 03:01:00,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:00,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452315047] [2021-12-16 03:01:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:00,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:00,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:00,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452315047] [2021-12-16 03:01:00,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452315047] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:00,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:00,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:00,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325552528] [2021-12-16 03:01:00,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:00,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:00,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:00,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:00,184 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:00,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 190 transitions, 780 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:00,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:00,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:00,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:00,868 INFO L129 PetriNetUnfolder]: 356/1763 cut-off events. [2021-12-16 03:01:00,869 INFO L130 PetriNetUnfolder]: For 924/977 co-relation queries the response was YES. [2021-12-16 03:01:00,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3539 conditions, 1763 events. 356/1763 cut-off events. For 924/977 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13551 event pairs, 210 based on Foata normal form. 1/1692 useless extension candidates. Maximal degree in co-relation 2540. Up to 670 conditions per place. [2021-12-16 03:01:00,880 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 7 changer transitions 48/303 dead transitions. [2021-12-16 03:01:00,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 303 transitions, 1449 flow [2021-12-16 03:01:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-16 03:01:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-16 03:01:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4117 transitions. [2021-12-16 03:01:00,889 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632554690396737 [2021-12-16 03:01:00,889 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4117 transitions. [2021-12-16 03:01:00,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4117 transitions. [2021-12-16 03:01:00,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:00,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4117 transitions. [2021-12-16 03:01:00,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.80645161290323) internal successors, (4117), 31 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:00,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:00,912 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:00,913 INFO L186 Difference]: Start difference. First operand has 183 places, 190 transitions, 780 flow. Second operand 31 states and 4117 transitions. [2021-12-16 03:01:00,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 303 transitions, 1449 flow [2021-12-16 03:01:00,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 303 transitions, 1433 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-16 03:01:00,925 INFO L242 Difference]: Finished difference. Result has 240 places, 196 transitions, 899 flow [2021-12-16 03:01:00,925 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=899, PETRI_PLACES=240, PETRI_TRANSITIONS=196} [2021-12-16 03:01:00,927 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 83 predicate places. [2021-12-16 03:01:00,928 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 196 transitions, 899 flow [2021-12-16 03:01:00,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:00,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:00,929 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:00,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:01:00,929 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:00,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:00,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1151738158, now seen corresponding path program 2 times [2021-12-16 03:01:00,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:00,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052302840] [2021-12-16 03:01:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:00,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:01,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:01,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052302840] [2021-12-16 03:01:01,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052302840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:01,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:01,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:01,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645878194] [2021-12-16 03:01:01,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:01,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:01,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:01,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:01,116 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:01,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 196 transitions, 899 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:01,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:01,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:01,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:01,846 INFO L129 PetriNetUnfolder]: 349/1779 cut-off events. [2021-12-16 03:01:01,846 INFO L130 PetriNetUnfolder]: For 6317/6380 co-relation queries the response was YES. [2021-12-16 03:01:01,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5692 conditions, 1779 events. 349/1779 cut-off events. For 6317/6380 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 13723 event pairs, 217 based on Foata normal form. 1/1702 useless extension candidates. Maximal degree in co-relation 5538. Up to 680 conditions per place. [2021-12-16 03:01:01,867 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 133 selfloop transitions, 5 changer transitions 46/331 dead transitions. [2021-12-16 03:01:01,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 331 transitions, 2272 flow [2021-12-16 03:01:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-16 03:01:01,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-16 03:01:01,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3981 transitions. [2021-12-16 03:01:01,877 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626436781609195 [2021-12-16 03:01:01,877 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3981 transitions. [2021-12-16 03:01:01,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3981 transitions. [2021-12-16 03:01:01,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:01,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3981 transitions. [2021-12-16 03:01:01,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.7) internal successors, (3981), 30 states have internal predecessors, (3981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:01,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:01,897 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:01,897 INFO L186 Difference]: Start difference. First operand has 240 places, 196 transitions, 899 flow. Second operand 30 states and 3981 transitions. [2021-12-16 03:01:01,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 331 transitions, 2272 flow [2021-12-16 03:01:01,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 331 transitions, 2104 flow, removed 81 selfloop flow, removed 12 redundant places. [2021-12-16 03:01:01,932 INFO L242 Difference]: Finished difference. Result has 263 places, 200 transitions, 1011 flow [2021-12-16 03:01:01,933 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1011, PETRI_PLACES=263, PETRI_TRANSITIONS=200} [2021-12-16 03:01:01,934 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 106 predicate places. [2021-12-16 03:01:01,934 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 200 transitions, 1011 flow [2021-12-16 03:01:01,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:01,935 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:01,935 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:01,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:01:01,935 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:01,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:01,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1239381162, now seen corresponding path program 3 times [2021-12-16 03:01:01,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:01,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268858189] [2021-12-16 03:01:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:01,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:02,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:02,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268858189] [2021-12-16 03:01:02,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268858189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:02,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:02,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:02,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10660579] [2021-12-16 03:01:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:02,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:02,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:02,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:02,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:02,124 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:02,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 200 transitions, 1011 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:02,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:02,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:02,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:02,839 INFO L129 PetriNetUnfolder]: 365/1847 cut-off events. [2021-12-16 03:01:02,839 INFO L130 PetriNetUnfolder]: For 12216/12279 co-relation queries the response was YES. [2021-12-16 03:01:02,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6818 conditions, 1847 events. 365/1847 cut-off events. For 12216/12279 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14371 event pairs, 228 based on Foata normal form. 1/1769 useless extension candidates. Maximal degree in co-relation 6647. Up to 740 conditions per place. [2021-12-16 03:01:02,866 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 91 selfloop transitions, 16 changer transitions 40/294 dead transitions. [2021-12-16 03:01:02,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 294 transitions, 2421 flow [2021-12-16 03:01:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-16 03:01:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-16 03:01:02,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3708 transitions. [2021-12-16 03:01:02,874 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610837438423645 [2021-12-16 03:01:02,875 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3708 transitions. [2021-12-16 03:01:02,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3708 transitions. [2021-12-16 03:01:02,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:02,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3708 transitions. [2021-12-16 03:01:02,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.42857142857142) internal successors, (3708), 28 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:02,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:02,892 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:02,896 INFO L186 Difference]: Start difference. First operand has 263 places, 200 transitions, 1011 flow. Second operand 28 states and 3708 transitions. [2021-12-16 03:01:02,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 294 transitions, 2421 flow [2021-12-16 03:01:02,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 294 transitions, 2289 flow, removed 64 selfloop flow, removed 14 redundant places. [2021-12-16 03:01:02,939 INFO L242 Difference]: Finished difference. Result has 270 places, 213 transitions, 1219 flow [2021-12-16 03:01:02,940 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1219, PETRI_PLACES=270, PETRI_TRANSITIONS=213} [2021-12-16 03:01:02,945 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 113 predicate places. [2021-12-16 03:01:02,945 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 213 transitions, 1219 flow [2021-12-16 03:01:02,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:02,953 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:02,953 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:02,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 03:01:02,953 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:02,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:02,954 INFO L85 PathProgramCache]: Analyzing trace with hash -580644240, now seen corresponding path program 4 times [2021-12-16 03:01:02,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:02,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932458439] [2021-12-16 03:01:02,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:02,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:03,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:03,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932458439] [2021-12-16 03:01:03,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932458439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:03,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:03,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:03,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144601431] [2021-12-16 03:01:03,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:03,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:03,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:03,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:03,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:03,109 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:03,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 213 transitions, 1219 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:03,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:03,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:03,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:03,854 INFO L129 PetriNetUnfolder]: 407/1903 cut-off events. [2021-12-16 03:01:03,854 INFO L130 PetriNetUnfolder]: For 14562/14625 co-relation queries the response was YES. [2021-12-16 03:01:03,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7841 conditions, 1903 events. 407/1903 cut-off events. For 14562/14625 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14799 event pairs, 257 based on Foata normal form. 1/1820 useless extension candidates. Maximal degree in co-relation 7666. Up to 760 conditions per place. [2021-12-16 03:01:03,881 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 25 changer transitions 40/301 dead transitions. [2021-12-16 03:01:03,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 301 transitions, 2802 flow [2021-12-16 03:01:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-16 03:01:03,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-16 03:01:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3453 transitions. [2021-12-16 03:01:03,888 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763262599469496 [2021-12-16 03:01:03,888 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3453 transitions. [2021-12-16 03:01:03,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3453 transitions. [2021-12-16 03:01:03,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:03,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3453 transitions. [2021-12-16 03:01:03,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.80769230769232) internal successors, (3453), 26 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:03,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:03,906 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:03,906 INFO L186 Difference]: Start difference. First operand has 270 places, 213 transitions, 1219 flow. Second operand 26 states and 3453 transitions. [2021-12-16 03:01:03,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 301 transitions, 2802 flow [2021-12-16 03:01:03,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 301 transitions, 2536 flow, removed 133 selfloop flow, removed 11 redundant places. [2021-12-16 03:01:03,963 INFO L242 Difference]: Finished difference. Result has 288 places, 230 transitions, 1534 flow [2021-12-16 03:01:03,964 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1534, PETRI_PLACES=288, PETRI_TRANSITIONS=230} [2021-12-16 03:01:03,965 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 131 predicate places. [2021-12-16 03:01:03,965 INFO L470 AbstractCegarLoop]: Abstraction has has 288 places, 230 transitions, 1534 flow [2021-12-16 03:01:03,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:03,965 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:03,966 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:03,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 03:01:03,966 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:03,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:03,967 INFO L85 PathProgramCache]: Analyzing trace with hash 390217628, now seen corresponding path program 5 times [2021-12-16 03:01:03,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:03,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641285393] [2021-12-16 03:01:03,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:03,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:04,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:04,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641285393] [2021-12-16 03:01:04,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641285393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:04,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:04,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:04,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584247287] [2021-12-16 03:01:04,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:04,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:04,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:04,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:04,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:04,188 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:04,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 230 transitions, 1534 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:04,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:04,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:04,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:04,975 INFO L129 PetriNetUnfolder]: 406/1961 cut-off events. [2021-12-16 03:01:04,976 INFO L130 PetriNetUnfolder]: For 17700/17765 co-relation queries the response was YES. [2021-12-16 03:01:04,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8442 conditions, 1961 events. 406/1961 cut-off events. For 17700/17765 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15355 event pairs, 269 based on Foata normal form. 1/1880 useless extension candidates. Maximal degree in co-relation 8255. Up to 762 conditions per place. [2021-12-16 03:01:05,006 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 32 changer transitions 40/311 dead transitions. [2021-12-16 03:01:05,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 311 transitions, 3177 flow [2021-12-16 03:01:05,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-16 03:01:05,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-16 03:01:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3320 transitions. [2021-12-16 03:01:05,011 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2021-12-16 03:01:05,011 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3320 transitions. [2021-12-16 03:01:05,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3320 transitions. [2021-12-16 03:01:05,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:05,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3320 transitions. [2021-12-16 03:01:05,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.8) internal successors, (3320), 25 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:05,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:05,023 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:05,023 INFO L186 Difference]: Start difference. First operand has 288 places, 230 transitions, 1534 flow. Second operand 25 states and 3320 transitions. [2021-12-16 03:01:05,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 311 transitions, 3177 flow [2021-12-16 03:01:05,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 311 transitions, 2894 flow, removed 136 selfloop flow, removed 12 redundant places. [2021-12-16 03:01:05,100 INFO L242 Difference]: Finished difference. Result has 306 places, 241 transitions, 1746 flow [2021-12-16 03:01:05,101 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1746, PETRI_PLACES=306, PETRI_TRANSITIONS=241} [2021-12-16 03:01:05,102 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2021-12-16 03:01:05,102 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 241 transitions, 1746 flow [2021-12-16 03:01:05,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:05,103 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:05,103 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:05,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 03:01:05,103 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:05,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:05,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1291461758, now seen corresponding path program 6 times [2021-12-16 03:01:05,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:05,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510438072] [2021-12-16 03:01:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:05,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:05,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:05,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510438072] [2021-12-16 03:01:05,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510438072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:05,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:05,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:05,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435231119] [2021-12-16 03:01:05,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:05,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:05,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:05,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:05,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:05,258 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:05,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 241 transitions, 1746 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:05,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:05,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:05,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:05,979 INFO L129 PetriNetUnfolder]: 402/1986 cut-off events. [2021-12-16 03:01:05,979 INFO L130 PetriNetUnfolder]: For 21317/21388 co-relation queries the response was YES. [2021-12-16 03:01:06,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8767 conditions, 1986 events. 402/1986 cut-off events. For 21317/21388 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15774 event pairs, 267 based on Foata normal form. 1/1897 useless extension candidates. Maximal degree in co-relation 8569. Up to 781 conditions per place. [2021-12-16 03:01:06,019 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 32 changer transitions 47/344 dead transitions. [2021-12-16 03:01:06,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 344 transitions, 3715 flow [2021-12-16 03:01:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-16 03:01:06,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-16 03:01:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3447 transitions. [2021-12-16 03:01:06,026 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619363395225465 [2021-12-16 03:01:06,026 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3447 transitions. [2021-12-16 03:01:06,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3447 transitions. [2021-12-16 03:01:06,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:06,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3447 transitions. [2021-12-16 03:01:06,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.57692307692307) internal successors, (3447), 26 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:06,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:06,040 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:06,040 INFO L186 Difference]: Start difference. First operand has 306 places, 241 transitions, 1746 flow. Second operand 26 states and 3447 transitions. [2021-12-16 03:01:06,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 344 transitions, 3715 flow [2021-12-16 03:01:06,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 344 transitions, 3384 flow, removed 150 selfloop flow, removed 13 redundant places. [2021-12-16 03:01:06,146 INFO L242 Difference]: Finished difference. Result has 324 places, 252 transitions, 1908 flow [2021-12-16 03:01:06,147 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1908, PETRI_PLACES=324, PETRI_TRANSITIONS=252} [2021-12-16 03:01:06,147 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2021-12-16 03:01:06,147 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 252 transitions, 1908 flow [2021-12-16 03:01:06,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:06,148 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:06,148 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:06,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 03:01:06,149 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:06,149 INFO L85 PathProgramCache]: Analyzing trace with hash -283778880, now seen corresponding path program 7 times [2021-12-16 03:01:06,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:06,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983587134] [2021-12-16 03:01:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:06,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:06,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:06,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983587134] [2021-12-16 03:01:06,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983587134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:06,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:06,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:06,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134164474] [2021-12-16 03:01:06,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:06,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:06,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:06,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:06,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:06,284 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:06,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 252 transitions, 1908 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:06,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:06,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:06,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:06,951 INFO L129 PetriNetUnfolder]: 395/1947 cut-off events. [2021-12-16 03:01:06,952 INFO L130 PetriNetUnfolder]: For 20313/20384 co-relation queries the response was YES. [2021-12-16 03:01:06,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8515 conditions, 1947 events. 395/1947 cut-off events. For 20313/20384 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15341 event pairs, 237 based on Foata normal form. 4/1868 useless extension candidates. Maximal degree in co-relation 8308. Up to 771 conditions per place. [2021-12-16 03:01:06,983 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 40 changer transitions 32/328 dead transitions. [2021-12-16 03:01:06,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 328 transitions, 3543 flow [2021-12-16 03:01:06,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 03:01:06,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-16 03:01:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2021-12-16 03:01:06,987 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2021-12-16 03:01:06,987 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2021-12-16 03:01:06,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2021-12-16 03:01:06,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:06,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2021-12-16 03:01:06,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:06,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:06,998 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:06,998 INFO L186 Difference]: Start difference. First operand has 324 places, 252 transitions, 1908 flow. Second operand 22 states and 2923 transitions. [2021-12-16 03:01:06,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 328 transitions, 3543 flow [2021-12-16 03:01:07,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 328 transitions, 3242 flow, removed 126 selfloop flow, removed 19 redundant places. [2021-12-16 03:01:07,110 INFO L242 Difference]: Finished difference. Result has 318 places, 262 transitions, 2086 flow [2021-12-16 03:01:07,110 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2086, PETRI_PLACES=318, PETRI_TRANSITIONS=262} [2021-12-16 03:01:07,111 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 161 predicate places. [2021-12-16 03:01:07,112 INFO L470 AbstractCegarLoop]: Abstraction has has 318 places, 262 transitions, 2086 flow [2021-12-16 03:01:07,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:07,112 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:07,112 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:07,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 03:01:07,113 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:07,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:07,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1336725370, now seen corresponding path program 8 times [2021-12-16 03:01:07,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:07,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340336172] [2021-12-16 03:01:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:07,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:07,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:07,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340336172] [2021-12-16 03:01:07,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340336172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:07,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:07,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:07,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582876363] [2021-12-16 03:01:07,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:07,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:07,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:07,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:07,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:07,264 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:07,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 262 transitions, 2086 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:07,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:07,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:07,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:08,099 INFO L129 PetriNetUnfolder]: 394/1961 cut-off events. [2021-12-16 03:01:08,099 INFO L130 PetriNetUnfolder]: For 18357/18428 co-relation queries the response was YES. [2021-12-16 03:01:08,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8436 conditions, 1961 events. 394/1961 cut-off events. For 18357/18428 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15484 event pairs, 241 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 8236. Up to 759 conditions per place. [2021-12-16 03:01:08,131 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 121 selfloop transitions, 36 changer transitions 42/346 dead transitions. [2021-12-16 03:01:08,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 346 transitions, 3929 flow [2021-12-16 03:01:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-16 03:01:08,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-16 03:01:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3581 transitions. [2021-12-16 03:01:08,138 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622392507449979 [2021-12-16 03:01:08,138 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3581 transitions. [2021-12-16 03:01:08,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3581 transitions. [2021-12-16 03:01:08,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:08,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3581 transitions. [2021-12-16 03:01:08,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.62962962962962) internal successors, (3581), 27 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:08,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:08,152 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:08,152 INFO L186 Difference]: Start difference. First operand has 318 places, 262 transitions, 2086 flow. Second operand 27 states and 3581 transitions. [2021-12-16 03:01:08,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 346 transitions, 3929 flow [2021-12-16 03:01:08,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 346 transitions, 3801 flow, removed 55 selfloop flow, removed 7 redundant places. [2021-12-16 03:01:08,261 INFO L242 Difference]: Finished difference. Result has 346 places, 269 transitions, 2297 flow [2021-12-16 03:01:08,262 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2297, PETRI_PLACES=346, PETRI_TRANSITIONS=269} [2021-12-16 03:01:08,263 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2021-12-16 03:01:08,263 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 269 transitions, 2297 flow [2021-12-16 03:01:08,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:08,264 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:08,264 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:08,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 03:01:08,264 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:08,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:08,265 INFO L85 PathProgramCache]: Analyzing trace with hash -871647628, now seen corresponding path program 9 times [2021-12-16 03:01:08,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:08,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191847858] [2021-12-16 03:01:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:08,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:08,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:08,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:08,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191847858] [2021-12-16 03:01:08,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191847858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:08,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:08,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:08,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972818865] [2021-12-16 03:01:08,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:08,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:08,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:08,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:08,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:08,387 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:08,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 269 transitions, 2297 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:08,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:08,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:08,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:09,043 INFO L129 PetriNetUnfolder]: 376/1848 cut-off events. [2021-12-16 03:01:09,044 INFO L130 PetriNetUnfolder]: For 18273/18341 co-relation queries the response was YES. [2021-12-16 03:01:09,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8267 conditions, 1848 events. 376/1848 cut-off events. For 18273/18341 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14418 event pairs, 233 based on Foata normal form. 3/1767 useless extension candidates. Maximal degree in co-relation 8088. Up to 763 conditions per place. [2021-12-16 03:01:09,080 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 26 changer transitions 40/320 dead transitions. [2021-12-16 03:01:09,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 320 transitions, 3445 flow [2021-12-16 03:01:09,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 03:01:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-16 03:01:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2021-12-16 03:01:09,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2021-12-16 03:01:09,092 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2021-12-16 03:01:09,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2021-12-16 03:01:09,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:09,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2021-12-16 03:01:09,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:09,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:09,113 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:09,113 INFO L186 Difference]: Start difference. First operand has 346 places, 269 transitions, 2297 flow. Second operand 18 states and 2400 transitions. [2021-12-16 03:01:09,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 320 transitions, 3445 flow [2021-12-16 03:01:09,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 320 transitions, 3283 flow, removed 67 selfloop flow, removed 15 redundant places. [2021-12-16 03:01:09,242 INFO L242 Difference]: Finished difference. Result has 336 places, 249 transitions, 1928 flow [2021-12-16 03:01:09,242 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1928, PETRI_PLACES=336, PETRI_TRANSITIONS=249} [2021-12-16 03:01:09,244 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 179 predicate places. [2021-12-16 03:01:09,244 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 249 transitions, 1928 flow [2021-12-16 03:01:09,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:09,244 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:09,245 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:09,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 03:01:09,246 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:09,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1092229912, now seen corresponding path program 10 times [2021-12-16 03:01:09,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:09,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604070235] [2021-12-16 03:01:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:09,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:09,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:09,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604070235] [2021-12-16 03:01:09,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604070235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:09,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:09,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:09,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526661610] [2021-12-16 03:01:09,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:09,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:09,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:09,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:09,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:09,416 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:09,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 249 transitions, 1928 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:09,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:09,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:09,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:10,050 INFO L129 PetriNetUnfolder]: 375/1854 cut-off events. [2021-12-16 03:01:10,050 INFO L130 PetriNetUnfolder]: For 16751/16819 co-relation queries the response was YES. [2021-12-16 03:01:10,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8130 conditions, 1854 events. 375/1854 cut-off events. For 16751/16819 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14500 event pairs, 234 based on Foata normal form. 3/1772 useless extension candidates. Maximal degree in co-relation 8030. Up to 763 conditions per place. [2021-12-16 03:01:10,077 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 29 changer transitions 38/320 dead transitions. [2021-12-16 03:01:10,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 320 transitions, 3448 flow [2021-12-16 03:01:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 03:01:10,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-16 03:01:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2925 transitions. [2021-12-16 03:01:10,082 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641065830721003 [2021-12-16 03:01:10,082 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2925 transitions. [2021-12-16 03:01:10,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2925 transitions. [2021-12-16 03:01:10,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:10,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2925 transitions. [2021-12-16 03:01:10,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.95454545454547) internal successors, (2925), 22 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:10,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:10,093 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:10,093 INFO L186 Difference]: Start difference. First operand has 336 places, 249 transitions, 1928 flow. Second operand 22 states and 2925 transitions. [2021-12-16 03:01:10,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 320 transitions, 3448 flow [2021-12-16 03:01:10,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 320 transitions, 3197 flow, removed 55 selfloop flow, removed 20 redundant places. [2021-12-16 03:01:10,190 INFO L242 Difference]: Finished difference. Result has 328 places, 255 transitions, 2039 flow [2021-12-16 03:01:10,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2039, PETRI_PLACES=328, PETRI_TRANSITIONS=255} [2021-12-16 03:01:10,191 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 171 predicate places. [2021-12-16 03:01:10,191 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 255 transitions, 2039 flow [2021-12-16 03:01:10,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:10,192 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:10,192 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:10,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 03:01:10,192 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:10,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1398167618, now seen corresponding path program 11 times [2021-12-16 03:01:10,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:10,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111557504] [2021-12-16 03:01:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:10,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:10,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:10,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111557504] [2021-12-16 03:01:10,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111557504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:10,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:10,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:10,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440967520] [2021-12-16 03:01:10,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:10,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:10,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:10,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:10,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:10,326 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:10,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 255 transitions, 2039 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:10,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:10,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:10,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:11,010 INFO L129 PetriNetUnfolder]: 380/1864 cut-off events. [2021-12-16 03:01:11,010 INFO L130 PetriNetUnfolder]: For 15617/15685 co-relation queries the response was YES. [2021-12-16 03:01:11,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8104 conditions, 1864 events. 380/1864 cut-off events. For 15617/15685 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14581 event pairs, 235 based on Foata normal form. 3/1782 useless extension candidates. Maximal degree in co-relation 8003. Up to 765 conditions per place. [2021-12-16 03:01:11,040 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 37 changer transitions 33/321 dead transitions. [2021-12-16 03:01:11,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 321 transitions, 3428 flow [2021-12-16 03:01:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 03:01:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-16 03:01:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2925 transitions. [2021-12-16 03:01:11,045 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641065830721003 [2021-12-16 03:01:11,045 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2925 transitions. [2021-12-16 03:01:11,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2925 transitions. [2021-12-16 03:01:11,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:11,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2925 transitions. [2021-12-16 03:01:11,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.95454545454547) internal successors, (2925), 22 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:11,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:11,055 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:11,056 INFO L186 Difference]: Start difference. First operand has 328 places, 255 transitions, 2039 flow. Second operand 22 states and 2925 transitions. [2021-12-16 03:01:11,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 321 transitions, 3428 flow [2021-12-16 03:01:11,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 321 transitions, 3173 flow, removed 72 selfloop flow, removed 16 redundant places. [2021-12-16 03:01:11,152 INFO L242 Difference]: Finished difference. Result has 332 places, 265 transitions, 2199 flow [2021-12-16 03:01:11,152 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2199, PETRI_PLACES=332, PETRI_TRANSITIONS=265} [2021-12-16 03:01:11,152 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 175 predicate places. [2021-12-16 03:01:11,153 INFO L470 AbstractCegarLoop]: Abstraction has has 332 places, 265 transitions, 2199 flow [2021-12-16 03:01:11,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:11,153 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:11,153 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:11,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 03:01:11,154 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:11,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:11,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1662165388, now seen corresponding path program 12 times [2021-12-16 03:01:11,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:11,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329994491] [2021-12-16 03:01:11,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:11,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:11,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:11,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329994491] [2021-12-16 03:01:11,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329994491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:11,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:11,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:11,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498192128] [2021-12-16 03:01:11,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:11,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:11,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:11,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:11,270 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:11,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 265 transitions, 2199 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:11,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:11,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:11,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:11,865 INFO L129 PetriNetUnfolder]: 377/1873 cut-off events. [2021-12-16 03:01:11,865 INFO L130 PetriNetUnfolder]: For 15630/15698 co-relation queries the response was YES. [2021-12-16 03:01:11,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8093 conditions, 1873 events. 377/1873 cut-off events. For 15630/15698 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14740 event pairs, 234 based on Foata normal form. 3/1790 useless extension candidates. Maximal degree in co-relation 7992. Up to 767 conditions per place. [2021-12-16 03:01:11,891 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 105 selfloop transitions, 41 changer transitions 30/323 dead transitions. [2021-12-16 03:01:11,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 323 transitions, 3442 flow [2021-12-16 03:01:11,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:01:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:01:11,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2021-12-16 03:01:11,899 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2021-12-16 03:01:11,899 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2021-12-16 03:01:11,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2021-12-16 03:01:11,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:11,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2021-12-16 03:01:11,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:11,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:11,908 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:11,908 INFO L186 Difference]: Start difference. First operand has 332 places, 265 transitions, 2199 flow. Second operand 20 states and 2663 transitions. [2021-12-16 03:01:11,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 323 transitions, 3442 flow [2021-12-16 03:01:12,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 323 transitions, 3297 flow, removed 57 selfloop flow, removed 8 redundant places. [2021-12-16 03:01:12,021 INFO L242 Difference]: Finished difference. Result has 341 places, 272 transitions, 2366 flow [2021-12-16 03:01:12,022 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2366, PETRI_PLACES=341, PETRI_TRANSITIONS=272} [2021-12-16 03:01:12,022 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2021-12-16 03:01:12,022 INFO L470 AbstractCegarLoop]: Abstraction has has 341 places, 272 transitions, 2366 flow [2021-12-16 03:01:12,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:12,023 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:12,023 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:12,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 03:01:12,023 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:12,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:12,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1657324294, now seen corresponding path program 13 times [2021-12-16 03:01:12,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:12,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466577731] [2021-12-16 03:01:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:12,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:12,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:12,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466577731] [2021-12-16 03:01:12,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466577731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:12,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:12,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:12,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607969378] [2021-12-16 03:01:12,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:12,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:12,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:12,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:12,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:12,141 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:12,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 272 transitions, 2366 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:12,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:12,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:12,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:12,731 INFO L129 PetriNetUnfolder]: 369/1848 cut-off events. [2021-12-16 03:01:12,732 INFO L130 PetriNetUnfolder]: For 14984/15052 co-relation queries the response was YES. [2021-12-16 03:01:12,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7918 conditions, 1848 events. 369/1848 cut-off events. For 14984/15052 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14487 event pairs, 234 based on Foata normal form. 3/1766 useless extension candidates. Maximal degree in co-relation 7814. Up to 763 conditions per place. [2021-12-16 03:01:12,758 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 28 changer transitions 37/315 dead transitions. [2021-12-16 03:01:12,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 315 transitions, 3290 flow [2021-12-16 03:01:12,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 03:01:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 03:01:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2531 transitions. [2021-12-16 03:01:12,762 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655777374470659 [2021-12-16 03:01:12,762 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2531 transitions. [2021-12-16 03:01:12,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2531 transitions. [2021-12-16 03:01:12,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:12,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2531 transitions. [2021-12-16 03:01:12,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.21052631578948) internal successors, (2531), 19 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:12,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:12,769 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:12,769 INFO L186 Difference]: Start difference. First operand has 341 places, 272 transitions, 2366 flow. Second operand 19 states and 2531 transitions. [2021-12-16 03:01:12,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 315 transitions, 3290 flow [2021-12-16 03:01:12,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 315 transitions, 3193 flow, removed 28 selfloop flow, removed 6 redundant places. [2021-12-16 03:01:12,862 INFO L242 Difference]: Finished difference. Result has 350 places, 258 transitions, 2092 flow [2021-12-16 03:01:12,863 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2092, PETRI_PLACES=350, PETRI_TRANSITIONS=258} [2021-12-16 03:01:12,863 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 193 predicate places. [2021-12-16 03:01:12,864 INFO L470 AbstractCegarLoop]: Abstraction has has 350 places, 258 transitions, 2092 flow [2021-12-16 03:01:12,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:12,864 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:12,864 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:12,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 03:01:12,865 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:12,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:12,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1692464110, now seen corresponding path program 14 times [2021-12-16 03:01:12,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:12,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74027547] [2021-12-16 03:01:12,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:12,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:12,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:12,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74027547] [2021-12-16 03:01:12,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74027547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:12,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:12,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:12,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259266072] [2021-12-16 03:01:12,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:12,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:12,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:12,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:12,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:12,992 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:12,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 258 transitions, 2092 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:12,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:12,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:12,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:13,585 INFO L129 PetriNetUnfolder]: 359/1843 cut-off events. [2021-12-16 03:01:13,585 INFO L130 PetriNetUnfolder]: For 15271/15343 co-relation queries the response was YES. [2021-12-16 03:01:13,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 1843 events. 359/1843 cut-off events. For 15271/15343 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14394 event pairs, 241 based on Foata normal form. 3/1764 useless extension candidates. Maximal degree in co-relation 7480. Up to 749 conditions per place. [2021-12-16 03:01:13,606 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 14 changer transitions 43/298 dead transitions. [2021-12-16 03:01:13,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 298 transitions, 2913 flow [2021-12-16 03:01:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-16 03:01:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-16 03:01:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2784 transitions. [2021-12-16 03:01:13,610 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2021-12-16 03:01:13,610 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2784 transitions. [2021-12-16 03:01:13,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2784 transitions. [2021-12-16 03:01:13,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:13,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2784 transitions. [2021-12-16 03:01:13,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.57142857142858) internal successors, (2784), 21 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:13,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:13,618 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:13,618 INFO L186 Difference]: Start difference. First operand has 350 places, 258 transitions, 2092 flow. Second operand 21 states and 2784 transitions. [2021-12-16 03:01:13,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 298 transitions, 2913 flow [2021-12-16 03:01:13,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 298 transitions, 2716 flow, removed 38 selfloop flow, removed 24 redundant places. [2021-12-16 03:01:13,693 INFO L242 Difference]: Finished difference. Result has 335 places, 235 transitions, 1610 flow [2021-12-16 03:01:13,693 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1610, PETRI_PLACES=335, PETRI_TRANSITIONS=235} [2021-12-16 03:01:13,694 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2021-12-16 03:01:13,694 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 235 transitions, 1610 flow [2021-12-16 03:01:13,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:13,694 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:13,695 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:13,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 03:01:13,695 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:13,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:13,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2141487422, now seen corresponding path program 15 times [2021-12-16 03:01:13,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:13,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119951688] [2021-12-16 03:01:13,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:13,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:13,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:13,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119951688] [2021-12-16 03:01:13,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119951688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:13,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:13,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:13,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214932714] [2021-12-16 03:01:13,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:13,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:13,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:13,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:13,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:13,825 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:13,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 235 transitions, 1610 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:13,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:13,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:13,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:14,452 INFO L129 PetriNetUnfolder]: 368/1869 cut-off events. [2021-12-16 03:01:14,452 INFO L130 PetriNetUnfolder]: For 15053/15120 co-relation queries the response was YES. [2021-12-16 03:01:14,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7650 conditions, 1869 events. 368/1869 cut-off events. For 15053/15120 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14568 event pairs, 262 based on Foata normal form. 1/1787 useless extension candidates. Maximal degree in co-relation 7552. Up to 749 conditions per place. [2021-12-16 03:01:14,469 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 29 changer transitions 35/303 dead transitions. [2021-12-16 03:01:14,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 303 transitions, 2893 flow [2021-12-16 03:01:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 03:01:14,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-16 03:01:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2021-12-16 03:01:14,475 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2021-12-16 03:01:14,475 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2021-12-16 03:01:14,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2021-12-16 03:01:14,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:14,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2021-12-16 03:01:14,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:14,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:14,486 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:14,486 INFO L186 Difference]: Start difference. First operand has 335 places, 235 transitions, 1610 flow. Second operand 24 states and 3187 transitions. [2021-12-16 03:01:14,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 303 transitions, 2893 flow [2021-12-16 03:01:14,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 303 transitions, 2713 flow, removed 36 selfloop flow, removed 21 redundant places. [2021-12-16 03:01:14,550 INFO L242 Difference]: Finished difference. Result has 318 places, 247 transitions, 1820 flow [2021-12-16 03:01:14,550 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1820, PETRI_PLACES=318, PETRI_TRANSITIONS=247} [2021-12-16 03:01:14,551 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 161 predicate places. [2021-12-16 03:01:14,551 INFO L470 AbstractCegarLoop]: Abstraction has has 318 places, 247 transitions, 1820 flow [2021-12-16 03:01:14,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:14,551 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:14,551 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:14,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 03:01:14,551 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:14,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1197105136, now seen corresponding path program 16 times [2021-12-16 03:01:14,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:14,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672894288] [2021-12-16 03:01:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:14,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:14,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:14,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672894288] [2021-12-16 03:01:14,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672894288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:14,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:14,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:14,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857391044] [2021-12-16 03:01:14,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:14,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:14,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:14,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:14,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:14,687 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:14,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 247 transitions, 1820 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:14,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:14,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:14,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:15,264 INFO L129 PetriNetUnfolder]: 365/1869 cut-off events. [2021-12-16 03:01:15,265 INFO L130 PetriNetUnfolder]: For 14228/14295 co-relation queries the response was YES. [2021-12-16 03:01:15,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7563 conditions, 1869 events. 365/1869 cut-off events. For 14228/14295 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14665 event pairs, 262 based on Foata normal form. 1/1787 useless extension candidates. Maximal degree in co-relation 7465. Up to 749 conditions per place. [2021-12-16 03:01:15,294 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 29 changer transitions 36/304 dead transitions. [2021-12-16 03:01:15,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 304 transitions, 2970 flow [2021-12-16 03:01:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 03:01:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-16 03:01:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2021-12-16 03:01:15,298 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2021-12-16 03:01:15,298 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2021-12-16 03:01:15,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2021-12-16 03:01:15,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:15,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2021-12-16 03:01:15,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:15,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:15,310 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:15,310 INFO L186 Difference]: Start difference. First operand has 318 places, 247 transitions, 1820 flow. Second operand 23 states and 3056 transitions. [2021-12-16 03:01:15,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 304 transitions, 2970 flow [2021-12-16 03:01:15,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 304 transitions, 2865 flow, removed 47 selfloop flow, removed 11 redundant places. [2021-12-16 03:01:15,383 INFO L242 Difference]: Finished difference. Result has 329 places, 250 transitions, 1947 flow [2021-12-16 03:01:15,383 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1947, PETRI_PLACES=329, PETRI_TRANSITIONS=250} [2021-12-16 03:01:15,384 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 172 predicate places. [2021-12-16 03:01:15,384 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 250 transitions, 1947 flow [2021-12-16 03:01:15,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:15,384 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:15,384 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:15,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 03:01:15,385 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:15,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:15,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1032270614, now seen corresponding path program 17 times [2021-12-16 03:01:15,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:15,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427261126] [2021-12-16 03:01:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:15,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:15,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:15,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427261126] [2021-12-16 03:01:15,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427261126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:15,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:15,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:15,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020870667] [2021-12-16 03:01:15,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:15,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:15,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:15,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:15,509 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:15,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 250 transitions, 1947 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:15,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:15,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:15,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:16,045 INFO L129 PetriNetUnfolder]: 359/1802 cut-off events. [2021-12-16 03:01:16,045 INFO L130 PetriNetUnfolder]: For 14102/14169 co-relation queries the response was YES. [2021-12-16 03:01:16,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7542 conditions, 1802 events. 359/1802 cut-off events. For 14102/14169 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13998 event pairs, 237 based on Foata normal form. 3/1721 useless extension candidates. Maximal degree in co-relation 7439. Up to 751 conditions per place. [2021-12-16 03:01:16,065 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 31 changer transitions 30/298 dead transitions. [2021-12-16 03:01:16,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 298 transitions, 2950 flow [2021-12-16 03:01:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:01:16,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:01:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2021-12-16 03:01:16,069 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2021-12-16 03:01:16,069 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2021-12-16 03:01:16,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2021-12-16 03:01:16,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:16,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2021-12-16 03:01:16,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:16,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:16,075 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:16,076 INFO L186 Difference]: Start difference. First operand has 329 places, 250 transitions, 1947 flow. Second operand 20 states and 2665 transitions. [2021-12-16 03:01:16,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 298 transitions, 2950 flow [2021-12-16 03:01:16,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 298 transitions, 2804 flow, removed 51 selfloop flow, removed 13 redundant places. [2021-12-16 03:01:16,204 INFO L242 Difference]: Finished difference. Result has 330 places, 256 transitions, 2065 flow [2021-12-16 03:01:16,204 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2065, PETRI_PLACES=330, PETRI_TRANSITIONS=256} [2021-12-16 03:01:16,205 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2021-12-16 03:01:16,205 INFO L470 AbstractCegarLoop]: Abstraction has has 330 places, 256 transitions, 2065 flow [2021-12-16 03:01:16,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:16,205 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:16,206 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:16,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 03:01:16,206 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:16,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:16,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1664830464, now seen corresponding path program 18 times [2021-12-16 03:01:16,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:16,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263464658] [2021-12-16 03:01:16,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:16,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:16,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:16,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263464658] [2021-12-16 03:01:16,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263464658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:16,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:16,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:16,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439583101] [2021-12-16 03:01:16,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:16,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:16,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:16,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:16,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:16,320 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:16,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 256 transitions, 2065 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:16,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:16,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:16,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:16,842 INFO L129 PetriNetUnfolder]: 362/1816 cut-off events. [2021-12-16 03:01:16,842 INFO L130 PetriNetUnfolder]: For 14073/14140 co-relation queries the response was YES. [2021-12-16 03:01:16,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7648 conditions, 1816 events. 362/1816 cut-off events. For 14073/14140 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14163 event pairs, 237 based on Foata normal form. 3/1735 useless extension candidates. Maximal degree in co-relation 7547. Up to 751 conditions per place. [2021-12-16 03:01:16,865 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 38 changer transitions 30/305 dead transitions. [2021-12-16 03:01:16,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 305 transitions, 3107 flow [2021-12-16 03:01:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 03:01:16,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 03:01:16,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2534 transitions. [2021-12-16 03:01:16,867 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7664851784633999 [2021-12-16 03:01:16,867 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2534 transitions. [2021-12-16 03:01:16,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2534 transitions. [2021-12-16 03:01:16,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:16,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2534 transitions. [2021-12-16 03:01:16,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.3684210526316) internal successors, (2534), 19 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:16,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:16,873 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:16,873 INFO L186 Difference]: Start difference. First operand has 330 places, 256 transitions, 2065 flow. Second operand 19 states and 2534 transitions. [2021-12-16 03:01:16,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 305 transitions, 3107 flow [2021-12-16 03:01:16,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 305 transitions, 2980 flow, removed 41 selfloop flow, removed 7 redundant places. [2021-12-16 03:01:16,943 INFO L242 Difference]: Finished difference. Result has 341 places, 264 transitions, 2250 flow [2021-12-16 03:01:16,943 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2250, PETRI_PLACES=341, PETRI_TRANSITIONS=264} [2021-12-16 03:01:16,944 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2021-12-16 03:01:16,944 INFO L470 AbstractCegarLoop]: Abstraction has has 341 places, 264 transitions, 2250 flow [2021-12-16 03:01:16,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:16,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:16,944 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:16,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 03:01:16,945 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:16,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash -494585254, now seen corresponding path program 19 times [2021-12-16 03:01:16,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:16,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393046261] [2021-12-16 03:01:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:16,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:17,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:17,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393046261] [2021-12-16 03:01:17,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393046261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:17,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:17,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:17,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888837259] [2021-12-16 03:01:17,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:17,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:17,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:17,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:17,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:17,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:17,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 264 transitions, 2250 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:17,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:17,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:17,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:17,569 INFO L129 PetriNetUnfolder]: 359/1827 cut-off events. [2021-12-16 03:01:17,570 INFO L130 PetriNetUnfolder]: For 14161/14228 co-relation queries the response was YES. [2021-12-16 03:01:17,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7670 conditions, 1827 events. 359/1827 cut-off events. For 14161/14228 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14320 event pairs, 236 based on Foata normal form. 3/1746 useless extension candidates. Maximal degree in co-relation 7563. Up to 751 conditions per place. [2021-12-16 03:01:17,592 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 34 changer transitions 31/309 dead transitions. [2021-12-16 03:01:17,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 309 transitions, 3247 flow [2021-12-16 03:01:17,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:01:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:01:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2021-12-16 03:01:17,595 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2021-12-16 03:01:17,595 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2021-12-16 03:01:17,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2021-12-16 03:01:17,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:17,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2021-12-16 03:01:17,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:17,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:17,601 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:17,602 INFO L186 Difference]: Start difference. First operand has 341 places, 264 transitions, 2250 flow. Second operand 20 states and 2665 transitions. [2021-12-16 03:01:17,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 309 transitions, 3247 flow [2021-12-16 03:01:17,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 309 transitions, 3125 flow, removed 24 selfloop flow, removed 9 redundant places. [2021-12-16 03:01:17,694 INFO L242 Difference]: Finished difference. Result has 351 places, 267 transitions, 2328 flow [2021-12-16 03:01:17,694 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2328, PETRI_PLACES=351, PETRI_TRANSITIONS=267} [2021-12-16 03:01:17,695 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 194 predicate places. [2021-12-16 03:01:17,695 INFO L470 AbstractCegarLoop]: Abstraction has has 351 places, 267 transitions, 2328 flow [2021-12-16 03:01:17,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:17,695 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:17,695 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:17,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 03:01:17,696 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:17,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:17,696 INFO L85 PathProgramCache]: Analyzing trace with hash 572550676, now seen corresponding path program 20 times [2021-12-16 03:01:17,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:17,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749144461] [2021-12-16 03:01:17,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:17,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:17,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:17,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749144461] [2021-12-16 03:01:17,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749144461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:17,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:17,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:17,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344534387] [2021-12-16 03:01:17,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:17,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:17,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:17,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:17,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:17,821 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:17,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 267 transitions, 2328 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:17,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:17,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:17,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:18,460 INFO L129 PetriNetUnfolder]: 357/1829 cut-off events. [2021-12-16 03:01:18,460 INFO L130 PetriNetUnfolder]: For 14180/14247 co-relation queries the response was YES. [2021-12-16 03:01:18,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7652 conditions, 1829 events. 357/1829 cut-off events. For 14180/14247 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14358 event pairs, 237 based on Foata normal form. 3/1747 useless extension candidates. Maximal degree in co-relation 7541. Up to 751 conditions per place. [2021-12-16 03:01:18,483 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 30 changer transitions 40/307 dead transitions. [2021-12-16 03:01:18,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 307 transitions, 3178 flow [2021-12-16 03:01:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 03:01:18,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-16 03:01:18,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2021-12-16 03:01:18,486 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2021-12-16 03:01:18,487 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2021-12-16 03:01:18,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2021-12-16 03:01:18,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:18,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2021-12-16 03:01:18,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:18,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:18,499 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:18,499 INFO L186 Difference]: Start difference. First operand has 351 places, 267 transitions, 2328 flow. Second operand 22 states and 2921 transitions. [2021-12-16 03:01:18,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 307 transitions, 3178 flow [2021-12-16 03:01:18,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 307 transitions, 3065 flow, removed 33 selfloop flow, removed 7 redundant places. [2021-12-16 03:01:18,603 INFO L242 Difference]: Finished difference. Result has 365 places, 258 transitions, 2138 flow [2021-12-16 03:01:18,603 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2138, PETRI_PLACES=365, PETRI_TRANSITIONS=258} [2021-12-16 03:01:18,604 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2021-12-16 03:01:18,604 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 258 transitions, 2138 flow [2021-12-16 03:01:18,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:18,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:18,605 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:18,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-16 03:01:18,606 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:18,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2056223134, now seen corresponding path program 21 times [2021-12-16 03:01:18,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:18,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3240955] [2021-12-16 03:01:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:18,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:18,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:18,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3240955] [2021-12-16 03:01:18,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3240955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:18,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:18,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:18,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754473870] [2021-12-16 03:01:18,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:18,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:18,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:18,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:18,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:18,717 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:18,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 258 transitions, 2138 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:18,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:18,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:18,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:19,314 INFO L129 PetriNetUnfolder]: 350/1796 cut-off events. [2021-12-16 03:01:19,314 INFO L130 PetriNetUnfolder]: For 13902/13969 co-relation queries the response was YES. [2021-12-16 03:01:19,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7422 conditions, 1796 events. 350/1796 cut-off events. For 13902/13969 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14047 event pairs, 237 based on Foata normal form. 3/1715 useless extension candidates. Maximal degree in co-relation 7305. Up to 751 conditions per place. [2021-12-16 03:01:19,340 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 16 changer transitions 43/293 dead transitions. [2021-12-16 03:01:19,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 293 transitions, 2884 flow [2021-12-16 03:01:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-16 03:01:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-16 03:01:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2791 transitions. [2021-12-16 03:01:19,343 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638204707170224 [2021-12-16 03:01:19,343 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2791 transitions. [2021-12-16 03:01:19,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2791 transitions. [2021-12-16 03:01:19,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:19,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2791 transitions. [2021-12-16 03:01:19,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.9047619047619) internal successors, (2791), 21 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:19,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:19,349 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:19,350 INFO L186 Difference]: Start difference. First operand has 365 places, 258 transitions, 2138 flow. Second operand 21 states and 2791 transitions. [2021-12-16 03:01:19,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 293 transitions, 2884 flow [2021-12-16 03:01:19,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 293 transitions, 2679 flow, removed 37 selfloop flow, removed 26 redundant places. [2021-12-16 03:01:19,419 INFO L242 Difference]: Finished difference. Result has 347 places, 241 transitions, 1735 flow [2021-12-16 03:01:19,419 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1735, PETRI_PLACES=347, PETRI_TRANSITIONS=241} [2021-12-16 03:01:19,420 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2021-12-16 03:01:19,420 INFO L470 AbstractCegarLoop]: Abstraction has has 347 places, 241 transitions, 1735 flow [2021-12-16 03:01:19,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:19,420 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:19,421 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:19,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-16 03:01:19,421 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1816344322, now seen corresponding path program 22 times [2021-12-16 03:01:19,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:19,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594385785] [2021-12-16 03:01:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:19,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:19,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:19,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594385785] [2021-12-16 03:01:19,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594385785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:19,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:19,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:19,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248692477] [2021-12-16 03:01:19,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:19,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:19,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:19,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:19,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:19,551 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:19,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 241 transitions, 1735 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:19,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:19,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:19,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:20,023 INFO L129 PetriNetUnfolder]: 338/1786 cut-off events. [2021-12-16 03:01:20,023 INFO L130 PetriNetUnfolder]: For 13051/13119 co-relation queries the response was YES. [2021-12-16 03:01:20,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 1786 events. 338/1786 cut-off events. For 13051/13119 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13873 event pairs, 257 based on Foata normal form. 1/1705 useless extension candidates. Maximal degree in co-relation 6838. Up to 736 conditions per place. [2021-12-16 03:01:20,045 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 72 selfloop transitions, 4 changer transitions 46/269 dead transitions. [2021-12-16 03:01:20,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 269 transitions, 2292 flow [2021-12-16 03:01:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:01:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:01:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2652 transitions. [2021-12-16 03:01:20,047 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620689655172413 [2021-12-16 03:01:20,047 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2652 transitions. [2021-12-16 03:01:20,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2652 transitions. [2021-12-16 03:01:20,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:20,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2652 transitions. [2021-12-16 03:01:20,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.6) internal successors, (2652), 20 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:20,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:20,053 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:20,053 INFO L186 Difference]: Start difference. First operand has 347 places, 241 transitions, 1735 flow. Second operand 20 states and 2652 transitions. [2021-12-16 03:01:20,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 269 transitions, 2292 flow [2021-12-16 03:01:20,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 269 transitions, 2147 flow, removed 25 selfloop flow, removed 24 redundant places. [2021-12-16 03:01:20,101 INFO L242 Difference]: Finished difference. Result has 322 places, 214 transitions, 1232 flow [2021-12-16 03:01:20,102 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1232, PETRI_PLACES=322, PETRI_TRANSITIONS=214} [2021-12-16 03:01:20,102 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2021-12-16 03:01:20,102 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 214 transitions, 1232 flow [2021-12-16 03:01:20,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:20,103 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:20,103 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:20,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-16 03:01:20,103 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:20,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:20,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1109497846, now seen corresponding path program 23 times [2021-12-16 03:01:20,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:20,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51463393] [2021-12-16 03:01:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:20,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:20,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:20,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51463393] [2021-12-16 03:01:20,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51463393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:20,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:20,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:20,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495540535] [2021-12-16 03:01:20,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:20,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:20,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:20,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:20,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:20,205 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:20,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 214 transitions, 1232 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:20,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:20,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:20,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:20,756 INFO L129 PetriNetUnfolder]: 354/1796 cut-off events. [2021-12-16 03:01:20,756 INFO L130 PetriNetUnfolder]: For 12922/12987 co-relation queries the response was YES. [2021-12-16 03:01:20,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7126 conditions, 1796 events. 354/1796 cut-off events. For 12922/12987 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13841 event pairs, 232 based on Foata normal form. 1/1717 useless extension candidates. Maximal degree in co-relation 7031. Up to 742 conditions per place. [2021-12-16 03:01:20,771 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 23 changer transitions 42/307 dead transitions. [2021-12-16 03:01:20,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 307 transitions, 2645 flow [2021-12-16 03:01:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-16 03:01:20,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-16 03:01:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2021-12-16 03:01:20,774 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2021-12-16 03:01:20,775 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2021-12-16 03:01:20,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2021-12-16 03:01:20,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:20,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2021-12-16 03:01:20,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:20,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:20,783 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:20,783 INFO L186 Difference]: Start difference. First operand has 322 places, 214 transitions, 1232 flow. Second operand 28 states and 3707 transitions. [2021-12-16 03:01:20,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 307 transitions, 2645 flow [2021-12-16 03:01:20,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 307 transitions, 2428 flow, removed 49 selfloop flow, removed 23 redundant places. [2021-12-16 03:01:20,840 INFO L242 Difference]: Finished difference. Result has 306 places, 227 transitions, 1432 flow [2021-12-16 03:01:20,841 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1432, PETRI_PLACES=306, PETRI_TRANSITIONS=227} [2021-12-16 03:01:20,845 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2021-12-16 03:01:20,846 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 227 transitions, 1432 flow [2021-12-16 03:01:20,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:20,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:20,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:20,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-16 03:01:20,848 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:20,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:20,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1651312036, now seen corresponding path program 24 times [2021-12-16 03:01:20,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:20,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786932250] [2021-12-16 03:01:20,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:20,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:20,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:20,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786932250] [2021-12-16 03:01:20,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786932250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:20,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:20,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:20,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88456964] [2021-12-16 03:01:20,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:20,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:20,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:20,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:20,959 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:20,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 227 transitions, 1432 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:20,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:20,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:20,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:21,609 INFO L129 PetriNetUnfolder]: 351/1798 cut-off events. [2021-12-16 03:01:21,609 INFO L130 PetriNetUnfolder]: For 12130/12195 co-relation queries the response was YES. [2021-12-16 03:01:21,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7080 conditions, 1798 events. 351/1798 cut-off events. For 12130/12195 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13966 event pairs, 236 based on Foata normal form. 1/1714 useless extension candidates. Maximal degree in co-relation 6982. Up to 740 conditions per place. [2021-12-16 03:01:21,642 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 84 selfloop transitions, 25 changer transitions 42/298 dead transitions. [2021-12-16 03:01:21,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 298 transitions, 2658 flow [2021-12-16 03:01:21,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-16 03:01:21,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-16 03:01:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3579 transitions. [2021-12-16 03:01:21,646 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7618135376756067 [2021-12-16 03:01:21,646 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3579 transitions. [2021-12-16 03:01:21,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3579 transitions. [2021-12-16 03:01:21,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:21,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3579 transitions. [2021-12-16 03:01:21,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.55555555555554) internal successors, (3579), 27 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:21,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:21,654 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:21,654 INFO L186 Difference]: Start difference. First operand has 306 places, 227 transitions, 1432 flow. Second operand 27 states and 3579 transitions. [2021-12-16 03:01:21,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 298 transitions, 2658 flow [2021-12-16 03:01:21,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 298 transitions, 2468 flow, removed 79 selfloop flow, removed 18 redundant places. [2021-12-16 03:01:21,705 INFO L242 Difference]: Finished difference. Result has 316 places, 231 transitions, 1577 flow [2021-12-16 03:01:21,706 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1577, PETRI_PLACES=316, PETRI_TRANSITIONS=231} [2021-12-16 03:01:21,706 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2021-12-16 03:01:21,707 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 231 transitions, 1577 flow [2021-12-16 03:01:21,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:21,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:21,707 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:21,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-16 03:01:21,708 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash 368389544, now seen corresponding path program 25 times [2021-12-16 03:01:21,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:21,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022844263] [2021-12-16 03:01:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:21,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:21,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:21,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022844263] [2021-12-16 03:01:21,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022844263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:21,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:21,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:21,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466077250] [2021-12-16 03:01:21,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:21,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:21,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:21,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:21,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:21,828 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:21,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 231 transitions, 1577 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:21,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:21,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:21,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:22,327 INFO L129 PetriNetUnfolder]: 346/1770 cut-off events. [2021-12-16 03:01:22,327 INFO L130 PetriNetUnfolder]: For 13238/13303 co-relation queries the response was YES. [2021-12-16 03:01:22,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7146 conditions, 1770 events. 346/1770 cut-off events. For 13238/13303 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13621 event pairs, 230 based on Foata normal form. 1/1690 useless extension candidates. Maximal degree in co-relation 7043. Up to 742 conditions per place. [2021-12-16 03:01:22,344 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 27 changer transitions 37/304 dead transitions. [2021-12-16 03:01:22,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 304 transitions, 2795 flow [2021-12-16 03:01:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 03:01:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-16 03:01:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3185 transitions. [2021-12-16 03:01:22,346 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626915708812261 [2021-12-16 03:01:22,346 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3185 transitions. [2021-12-16 03:01:22,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3185 transitions. [2021-12-16 03:01:22,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:22,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3185 transitions. [2021-12-16 03:01:22,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.70833333333334) internal successors, (3185), 24 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:22,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:22,352 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:22,352 INFO L186 Difference]: Start difference. First operand has 316 places, 231 transitions, 1577 flow. Second operand 24 states and 3185 transitions. [2021-12-16 03:01:22,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 304 transitions, 2795 flow [2021-12-16 03:01:22,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 304 transitions, 2565 flow, removed 96 selfloop flow, removed 19 redundant places. [2021-12-16 03:01:22,417 INFO L242 Difference]: Finished difference. Result has 316 places, 238 transitions, 1692 flow [2021-12-16 03:01:22,418 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1692, PETRI_PLACES=316, PETRI_TRANSITIONS=238} [2021-12-16 03:01:22,418 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2021-12-16 03:01:22,418 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 238 transitions, 1692 flow [2021-12-16 03:01:22,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:22,418 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:22,419 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:22,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-16 03:01:22,419 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:22,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1772534380, now seen corresponding path program 26 times [2021-12-16 03:01:22,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:22,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449322188] [2021-12-16 03:01:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:22,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:22,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:22,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449322188] [2021-12-16 03:01:22,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449322188] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:22,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:22,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:22,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270976620] [2021-12-16 03:01:22,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:22,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:22,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:22,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:22,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:22,556 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:22,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 238 transitions, 1692 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:22,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:22,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:22,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:23,136 INFO L129 PetriNetUnfolder]: 355/1790 cut-off events. [2021-12-16 03:01:23,137 INFO L130 PetriNetUnfolder]: For 12708/12773 co-relation queries the response was YES. [2021-12-16 03:01:23,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7292 conditions, 1790 events. 355/1790 cut-off events. For 12708/12773 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13737 event pairs, 237 based on Foata normal form. 1/1707 useless extension candidates. Maximal degree in co-relation 7191. Up to 748 conditions per place. [2021-12-16 03:01:23,150 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 37 changer transitions 36/303 dead transitions. [2021-12-16 03:01:23,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 303 transitions, 2863 flow [2021-12-16 03:01:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 03:01:23,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-16 03:01:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2021-12-16 03:01:23,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2021-12-16 03:01:23,152 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2021-12-16 03:01:23,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2021-12-16 03:01:23,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:23,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2021-12-16 03:01:23,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:23,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:23,157 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:23,157 INFO L186 Difference]: Start difference. First operand has 316 places, 238 transitions, 1692 flow. Second operand 23 states and 3057 transitions. [2021-12-16 03:01:23,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 303 transitions, 2863 flow [2021-12-16 03:01:23,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 303 transitions, 2669 flow, removed 80 selfloop flow, removed 13 redundant places. [2021-12-16 03:01:23,213 INFO L242 Difference]: Finished difference. Result has 326 places, 248 transitions, 1901 flow [2021-12-16 03:01:23,213 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1901, PETRI_PLACES=326, PETRI_TRANSITIONS=248} [2021-12-16 03:01:23,213 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2021-12-16 03:01:23,213 INFO L470 AbstractCegarLoop]: Abstraction has has 326 places, 248 transitions, 1901 flow [2021-12-16 03:01:23,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:23,214 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:23,214 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:23,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-16 03:01:23,214 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:23,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1910270878, now seen corresponding path program 27 times [2021-12-16 03:01:23,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:23,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276633149] [2021-12-16 03:01:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:23,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:23,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:23,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276633149] [2021-12-16 03:01:23,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276633149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:23,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:23,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:23,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002091076] [2021-12-16 03:01:23,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:23,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:23,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:23,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:23,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:23,336 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:23,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 248 transitions, 1901 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:23,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:23,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:23,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:23,942 INFO L129 PetriNetUnfolder]: 352/1782 cut-off events. [2021-12-16 03:01:23,942 INFO L130 PetriNetUnfolder]: For 12729/12794 co-relation queries the response was YES. [2021-12-16 03:01:23,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7311 conditions, 1782 events. 352/1782 cut-off events. For 12729/12794 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13683 event pairs, 233 based on Foata normal form. 1/1699 useless extension candidates. Maximal degree in co-relation 7205. Up to 746 conditions per place. [2021-12-16 03:01:23,962 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 33 changer transitions 37/309 dead transitions. [2021-12-16 03:01:23,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 309 transitions, 3075 flow [2021-12-16 03:01:23,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 03:01:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-16 03:01:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3190 transitions. [2021-12-16 03:01:23,968 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638888888888888 [2021-12-16 03:01:23,968 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3190 transitions. [2021-12-16 03:01:23,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3190 transitions. [2021-12-16 03:01:23,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:23,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3190 transitions. [2021-12-16 03:01:23,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.91666666666666) internal successors, (3190), 24 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:23,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:23,974 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:23,974 INFO L186 Difference]: Start difference. First operand has 326 places, 248 transitions, 1901 flow. Second operand 24 states and 3190 transitions. [2021-12-16 03:01:23,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 309 transitions, 3075 flow [2021-12-16 03:01:24,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 309 transitions, 2857 flow, removed 79 selfloop flow, removed 15 redundant places. [2021-12-16 03:01:24,050 INFO L242 Difference]: Finished difference. Result has 335 places, 252 transitions, 1999 flow [2021-12-16 03:01:24,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1999, PETRI_PLACES=335, PETRI_TRANSITIONS=252} [2021-12-16 03:01:24,051 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2021-12-16 03:01:24,051 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 252 transitions, 1999 flow [2021-12-16 03:01:24,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:24,052 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:24,052 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:24,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-16 03:01:24,052 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:24,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:24,052 INFO L85 PathProgramCache]: Analyzing trace with hash 589322898, now seen corresponding path program 28 times [2021-12-16 03:01:24,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:24,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713759532] [2021-12-16 03:01:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:24,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:24,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:24,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713759532] [2021-12-16 03:01:24,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713759532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:24,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:24,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:24,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883615063] [2021-12-16 03:01:24,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:24,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:24,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:24,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:24,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:24,156 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:24,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 252 transitions, 1999 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:24,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:24,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:24,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:24,649 INFO L129 PetriNetUnfolder]: 347/1782 cut-off events. [2021-12-16 03:01:24,649 INFO L130 PetriNetUnfolder]: For 12570/12635 co-relation queries the response was YES. [2021-12-16 03:01:24,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7226 conditions, 1782 events. 347/1782 cut-off events. For 12570/12635 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13791 event pairs, 230 based on Foata normal form. 1/1702 useless extension candidates. Maximal degree in co-relation 7117. Up to 748 conditions per place. [2021-12-16 03:01:24,678 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 35 changer transitions 32/310 dead transitions. [2021-12-16 03:01:24,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 310 transitions, 2997 flow [2021-12-16 03:01:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:01:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:01:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2021-12-16 03:01:24,680 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2021-12-16 03:01:24,680 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2021-12-16 03:01:24,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2021-12-16 03:01:24,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:24,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2021-12-16 03:01:24,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:24,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:24,684 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:24,685 INFO L186 Difference]: Start difference. First operand has 335 places, 252 transitions, 1999 flow. Second operand 20 states and 2663 transitions. [2021-12-16 03:01:24,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 310 transitions, 2997 flow [2021-12-16 03:01:24,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 310 transitions, 2855 flow, removed 56 selfloop flow, removed 12 redundant places. [2021-12-16 03:01:24,758 INFO L242 Difference]: Finished difference. Result has 336 places, 259 transitions, 2133 flow [2021-12-16 03:01:24,758 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2133, PETRI_PLACES=336, PETRI_TRANSITIONS=259} [2021-12-16 03:01:24,758 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 179 predicate places. [2021-12-16 03:01:24,759 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 259 transitions, 2133 flow [2021-12-16 03:01:24,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:24,759 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:24,759 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:24,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-16 03:01:24,759 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:24,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:24,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1624713666, now seen corresponding path program 29 times [2021-12-16 03:01:24,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:24,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292595743] [2021-12-16 03:01:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:24,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:24,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:24,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292595743] [2021-12-16 03:01:24,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292595743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:24,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:24,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:24,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273820726] [2021-12-16 03:01:24,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:24,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:24,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:24,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:24,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:24,866 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:24,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 259 transitions, 2133 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:24,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:24,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:24,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:25,404 INFO L129 PetriNetUnfolder]: 344/1784 cut-off events. [2021-12-16 03:01:25,405 INFO L130 PetriNetUnfolder]: For 12282/12347 co-relation queries the response was YES. [2021-12-16 03:01:25,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7213 conditions, 1784 events. 344/1784 cut-off events. For 12282/12347 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13807 event pairs, 229 based on Foata normal form. 1/1701 useless extension candidates. Maximal degree in co-relation 7105. Up to 746 conditions per place. [2021-12-16 03:01:25,434 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 35 changer transitions 31/307 dead transitions. [2021-12-16 03:01:25,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 307 transitions, 3065 flow [2021-12-16 03:01:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:01:25,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:01:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2668 transitions. [2021-12-16 03:01:25,437 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2021-12-16 03:01:25,437 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2668 transitions. [2021-12-16 03:01:25,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2668 transitions. [2021-12-16 03:01:25,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:25,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2668 transitions. [2021-12-16 03:01:25,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.4) internal successors, (2668), 20 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:25,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:25,442 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:25,442 INFO L186 Difference]: Start difference. First operand has 336 places, 259 transitions, 2133 flow. Second operand 20 states and 2668 transitions. [2021-12-16 03:01:25,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 307 transitions, 3065 flow [2021-12-16 03:01:25,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 307 transitions, 2954 flow, removed 36 selfloop flow, removed 8 redundant places. [2021-12-16 03:01:25,541 INFO L242 Difference]: Finished difference. Result has 347 places, 265 transitions, 2265 flow [2021-12-16 03:01:25,543 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2265, PETRI_PLACES=347, PETRI_TRANSITIONS=265} [2021-12-16 03:01:25,543 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2021-12-16 03:01:25,543 INFO L470 AbstractCegarLoop]: Abstraction has has 347 places, 265 transitions, 2265 flow [2021-12-16 03:01:25,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:25,544 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:25,544 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:25,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-16 03:01:25,544 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:25,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:25,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1878473742, now seen corresponding path program 30 times [2021-12-16 03:01:25,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:25,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393294332] [2021-12-16 03:01:25,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:25,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:25,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:25,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393294332] [2021-12-16 03:01:25,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393294332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:25,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:25,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:25,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165094009] [2021-12-16 03:01:25,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:25,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:25,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:25,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:25,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:25,676 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:25,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 265 transitions, 2265 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:25,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:25,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:25,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:26,176 INFO L129 PetriNetUnfolder]: 347/1790 cut-off events. [2021-12-16 03:01:26,176 INFO L130 PetriNetUnfolder]: For 12563/12628 co-relation queries the response was YES. [2021-12-16 03:01:26,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7354 conditions, 1790 events. 347/1790 cut-off events. For 12563/12628 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13827 event pairs, 229 based on Foata normal form. 1/1707 useless extension candidates. Maximal degree in co-relation 7241. Up to 748 conditions per place. [2021-12-16 03:01:26,207 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 86 selfloop transitions, 51 changer transitions 31/315 dead transitions. [2021-12-16 03:01:26,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 315 transitions, 3304 flow [2021-12-16 03:01:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 03:01:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 03:01:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2535 transitions. [2021-12-16 03:01:26,209 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7667876588021778 [2021-12-16 03:01:26,209 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2535 transitions. [2021-12-16 03:01:26,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2535 transitions. [2021-12-16 03:01:26,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:26,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2535 transitions. [2021-12-16 03:01:26,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.42105263157896) internal successors, (2535), 19 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:26,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:26,213 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:26,213 INFO L186 Difference]: Start difference. First operand has 347 places, 265 transitions, 2265 flow. Second operand 19 states and 2535 transitions. [2021-12-16 03:01:26,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 315 transitions, 3304 flow [2021-12-16 03:01:26,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 315 transitions, 3148 flow, removed 54 selfloop flow, removed 8 redundant places. [2021-12-16 03:01:26,284 INFO L242 Difference]: Finished difference. Result has 357 places, 273 transitions, 2467 flow [2021-12-16 03:01:26,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2467, PETRI_PLACES=357, PETRI_TRANSITIONS=273} [2021-12-16 03:01:26,285 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 200 predicate places. [2021-12-16 03:01:26,285 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 273 transitions, 2467 flow [2021-12-16 03:01:26,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:26,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:26,285 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:26,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-16 03:01:26,285 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:26,286 INFO L85 PathProgramCache]: Analyzing trace with hash 222143062, now seen corresponding path program 31 times [2021-12-16 03:01:26,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:26,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162426130] [2021-12-16 03:01:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:26,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:26,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:26,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162426130] [2021-12-16 03:01:26,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162426130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:26,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:26,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:26,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649012388] [2021-12-16 03:01:26,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:26,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:26,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:26,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:26,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:26,384 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:26,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 273 transitions, 2467 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:26,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:26,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:26,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:26,880 INFO L129 PetriNetUnfolder]: 344/1803 cut-off events. [2021-12-16 03:01:26,881 INFO L130 PetriNetUnfolder]: For 12692/12757 co-relation queries the response was YES. [2021-12-16 03:01:26,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7381 conditions, 1803 events. 344/1803 cut-off events. For 12692/12757 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14029 event pairs, 227 based on Foata normal form. 1/1720 useless extension candidates. Maximal degree in co-relation 7263. Up to 746 conditions per place. [2021-12-16 03:01:26,900 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 43 changer transitions 32/319 dead transitions. [2021-12-16 03:01:26,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 319 transitions, 3458 flow [2021-12-16 03:01:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:01:26,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:01:26,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2666 transitions. [2021-12-16 03:01:26,902 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7660919540229885 [2021-12-16 03:01:26,902 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2666 transitions. [2021-12-16 03:01:26,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2666 transitions. [2021-12-16 03:01:26,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:26,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2666 transitions. [2021-12-16 03:01:26,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.3) internal successors, (2666), 20 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:26,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:26,906 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:26,906 INFO L186 Difference]: Start difference. First operand has 357 places, 273 transitions, 2467 flow. Second operand 20 states and 2666 transitions. [2021-12-16 03:01:26,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 319 transitions, 3458 flow [2021-12-16 03:01:26,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 319 transitions, 3295 flow, removed 34 selfloop flow, removed 9 redundant places. [2021-12-16 03:01:26,980 INFO L242 Difference]: Finished difference. Result has 367 places, 277 transitions, 2558 flow [2021-12-16 03:01:26,981 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2558, PETRI_PLACES=367, PETRI_TRANSITIONS=277} [2021-12-16 03:01:26,981 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 210 predicate places. [2021-12-16 03:01:26,981 INFO L470 AbstractCegarLoop]: Abstraction has has 367 places, 277 transitions, 2558 flow [2021-12-16 03:01:26,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:26,981 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:26,981 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:26,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-16 03:01:26,982 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:26,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:26,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1386699736, now seen corresponding path program 32 times [2021-12-16 03:01:26,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:26,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063602112] [2021-12-16 03:01:26,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:26,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:27,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:27,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063602112] [2021-12-16 03:01:27,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063602112] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:27,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:27,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:27,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734376503] [2021-12-16 03:01:27,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:27,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:27,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:27,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:27,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:27,095 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:27,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 277 transitions, 2558 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:27,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:27,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:27,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:27,612 INFO L129 PetriNetUnfolder]: 336/1773 cut-off events. [2021-12-16 03:01:27,613 INFO L130 PetriNetUnfolder]: For 12341/12406 co-relation queries the response was YES. [2021-12-16 03:01:27,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7195 conditions, 1773 events. 336/1773 cut-off events. For 12341/12406 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13820 event pairs, 226 based on Foata normal form. 1/1693 useless extension candidates. Maximal degree in co-relation 7073. Up to 741 conditions per place. [2021-12-16 03:01:27,637 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 102 selfloop transitions, 20 changer transitions 47/316 dead transitions. [2021-12-16 03:01:27,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 316 transitions, 3257 flow [2021-12-16 03:01:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 03:01:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 03:01:27,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2021-12-16 03:01:27,639 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658802177858439 [2021-12-16 03:01:27,639 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2021-12-16 03:01:27,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2021-12-16 03:01:27,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:27,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2021-12-16 03:01:27,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:27,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:27,644 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:27,644 INFO L186 Difference]: Start difference. First operand has 367 places, 277 transitions, 2558 flow. Second operand 19 states and 2532 transitions. [2021-12-16 03:01:27,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 316 transitions, 3257 flow [2021-12-16 03:01:27,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 316 transitions, 3138 flow, removed 36 selfloop flow, removed 7 redundant places. [2021-12-16 03:01:27,745 INFO L242 Difference]: Finished difference. Result has 373 places, 253 transitions, 2080 flow [2021-12-16 03:01:27,745 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2080, PETRI_PLACES=373, PETRI_TRANSITIONS=253} [2021-12-16 03:01:27,746 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 216 predicate places. [2021-12-16 03:01:27,746 INFO L470 AbstractCegarLoop]: Abstraction has has 373 places, 253 transitions, 2080 flow [2021-12-16 03:01:27,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:27,746 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:27,746 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:27,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-16 03:01:27,746 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:27,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:27,747 INFO L85 PathProgramCache]: Analyzing trace with hash 803849444, now seen corresponding path program 33 times [2021-12-16 03:01:27,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:27,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823978788] [2021-12-16 03:01:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:27,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:27,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:27,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823978788] [2021-12-16 03:01:27,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823978788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:27,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:27,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:27,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768564180] [2021-12-16 03:01:27,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:27,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:27,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:27,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:27,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:27,845 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:27,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 253 transitions, 2080 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:27,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:27,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:27,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:28,364 INFO L129 PetriNetUnfolder]: 332/1750 cut-off events. [2021-12-16 03:01:28,364 INFO L130 PetriNetUnfolder]: For 12052/12117 co-relation queries the response was YES. [2021-12-16 03:01:28,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7003 conditions, 1750 events. 332/1750 cut-off events. For 12052/12117 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13517 event pairs, 227 based on Foata normal form. 1/1667 useless extension candidates. Maximal degree in co-relation 6880. Up to 739 conditions per place. [2021-12-16 03:01:28,386 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 23 changer transitions 41/294 dead transitions. [2021-12-16 03:01:28,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 294 transitions, 2868 flow [2021-12-16 03:01:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-16 03:01:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-16 03:01:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2795 transitions. [2021-12-16 03:01:28,389 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649151614668857 [2021-12-16 03:01:28,389 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2795 transitions. [2021-12-16 03:01:28,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2795 transitions. [2021-12-16 03:01:28,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:28,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2795 transitions. [2021-12-16 03:01:28,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.0952380952381) internal successors, (2795), 21 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:28,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:28,394 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:28,395 INFO L186 Difference]: Start difference. First operand has 373 places, 253 transitions, 2080 flow. Second operand 21 states and 2795 transitions. [2021-12-16 03:01:28,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 294 transitions, 2868 flow [2021-12-16 03:01:28,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 294 transitions, 2644 flow, removed 37 selfloop flow, removed 25 redundant places. [2021-12-16 03:01:28,459 INFO L242 Difference]: Finished difference. Result has 348 places, 244 transitions, 1823 flow [2021-12-16 03:01:28,459 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1823, PETRI_PLACES=348, PETRI_TRANSITIONS=244} [2021-12-16 03:01:28,460 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 191 predicate places. [2021-12-16 03:01:28,460 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 244 transitions, 1823 flow [2021-12-16 03:01:28,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:28,460 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:28,460 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:28,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-16 03:01:28,460 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1972861428, now seen corresponding path program 34 times [2021-12-16 03:01:28,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:28,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325996662] [2021-12-16 03:01:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:28,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:28,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:28,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325996662] [2021-12-16 03:01:28,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325996662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:28,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:28,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:28,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466577452] [2021-12-16 03:01:28,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:28,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:28,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:28,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:28,582 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:28,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 244 transitions, 1823 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:28,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:28,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:28,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:29,103 INFO L129 PetriNetUnfolder]: 325/1725 cut-off events. [2021-12-16 03:01:29,104 INFO L130 PetriNetUnfolder]: For 10594/10659 co-relation queries the response was YES. [2021-12-16 03:01:29,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6538 conditions, 1725 events. 325/1725 cut-off events. For 10594/10659 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13321 event pairs, 227 based on Foata normal form. 1/1642 useless extension candidates. Maximal degree in co-relation 6424. Up to 735 conditions per place. [2021-12-16 03:01:29,125 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 70 selfloop transitions, 18 changer transitions 42/277 dead transitions. [2021-12-16 03:01:29,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 277 transitions, 2403 flow [2021-12-16 03:01:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 03:01:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-16 03:01:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2021-12-16 03:01:29,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2021-12-16 03:01:29,127 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2021-12-16 03:01:29,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2021-12-16 03:01:29,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:29,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2021-12-16 03:01:29,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:29,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:29,137 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:29,137 INFO L186 Difference]: Start difference. First operand has 348 places, 244 transitions, 1823 flow. Second operand 22 states and 2921 transitions. [2021-12-16 03:01:29,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 277 transitions, 2403 flow [2021-12-16 03:01:29,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 277 transitions, 2248 flow, removed 25 selfloop flow, removed 24 redundant places. [2021-12-16 03:01:29,187 INFO L242 Difference]: Finished difference. Result has 334 places, 227 transitions, 1492 flow [2021-12-16 03:01:29,187 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1492, PETRI_PLACES=334, PETRI_TRANSITIONS=227} [2021-12-16 03:01:29,187 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 177 predicate places. [2021-12-16 03:01:29,188 INFO L470 AbstractCegarLoop]: Abstraction has has 334 places, 227 transitions, 1492 flow [2021-12-16 03:01:29,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:29,188 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:29,188 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:29,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-16 03:01:29,189 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:29,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:29,189 INFO L85 PathProgramCache]: Analyzing trace with hash -655691594, now seen corresponding path program 35 times [2021-12-16 03:01:29,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:29,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837613270] [2021-12-16 03:01:29,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:29,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:29,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:29,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837613270] [2021-12-16 03:01:29,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837613270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:29,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:29,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:29,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453685865] [2021-12-16 03:01:29,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:29,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:29,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:29,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:29,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:29,313 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:29,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 227 transitions, 1492 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:29,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:29,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:29,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:29,729 INFO L129 PetriNetUnfolder]: 313/1639 cut-off events. [2021-12-16 03:01:29,729 INFO L130 PetriNetUnfolder]: For 9772/9837 co-relation queries the response was YES. [2021-12-16 03:01:29,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6101 conditions, 1639 events. 313/1639 cut-off events. For 9772/9837 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 12336 event pairs, 225 based on Foata normal form. 1/1558 useless extension candidates. Maximal degree in co-relation 5995. Up to 713 conditions per place. [2021-12-16 03:01:29,745 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 59 selfloop transitions, 2 changer transitions 49/255 dead transitions. [2021-12-16 03:01:29,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 255 transitions, 1949 flow [2021-12-16 03:01:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:01:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:01:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2653 transitions. [2021-12-16 03:01:29,747 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623563218390804 [2021-12-16 03:01:29,748 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2653 transitions. [2021-12-16 03:01:29,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2653 transitions. [2021-12-16 03:01:29,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:29,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2653 transitions. [2021-12-16 03:01:29,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.65) internal successors, (2653), 20 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:29,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:29,753 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:29,754 INFO L186 Difference]: Start difference. First operand has 334 places, 227 transitions, 1492 flow. Second operand 20 states and 2653 transitions. [2021-12-16 03:01:29,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 255 transitions, 1949 flow [2021-12-16 03:01:29,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 255 transitions, 1819 flow, removed 25 selfloop flow, removed 25 redundant places. [2021-12-16 03:01:29,809 INFO L242 Difference]: Finished difference. Result has 309 places, 198 transitions, 1010 flow [2021-12-16 03:01:29,809 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1010, PETRI_PLACES=309, PETRI_TRANSITIONS=198} [2021-12-16 03:01:29,809 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 152 predicate places. [2021-12-16 03:01:29,810 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 198 transitions, 1010 flow [2021-12-16 03:01:29,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:29,810 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:29,810 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:29,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-16 03:01:29,811 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:29,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:29,811 INFO L85 PathProgramCache]: Analyzing trace with hash 158354340, now seen corresponding path program 1 times [2021-12-16 03:01:29,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:29,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169025916] [2021-12-16 03:01:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:29,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:29,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:29,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169025916] [2021-12-16 03:01:29,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169025916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:29,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:29,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:29,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735554007] [2021-12-16 03:01:29,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:29,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:29,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:29,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:29,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:29,902 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:29,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 198 transitions, 1010 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:29,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:29,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:29,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:30,383 INFO L129 PetriNetUnfolder]: 405/1819 cut-off events. [2021-12-16 03:01:30,383 INFO L130 PetriNetUnfolder]: For 11492/11562 co-relation queries the response was YES. [2021-12-16 03:01:30,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6867 conditions, 1819 events. 405/1819 cut-off events. For 11492/11562 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13631 event pairs, 255 based on Foata normal form. 8/1726 useless extension candidates. Maximal degree in co-relation 6775. Up to 739 conditions per place. [2021-12-16 03:01:30,397 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 80 selfloop transitions, 14 changer transitions 32/272 dead transitions. [2021-12-16 03:01:30,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 272 transitions, 2121 flow [2021-12-16 03:01:30,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 03:01:30,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-16 03:01:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2926 transitions. [2021-12-16 03:01:30,399 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2021-12-16 03:01:30,399 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2926 transitions. [2021-12-16 03:01:30,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2926 transitions. [2021-12-16 03:01:30,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:30,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2926 transitions. [2021-12-16 03:01:30,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:30,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:30,403 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:30,403 INFO L186 Difference]: Start difference. First operand has 309 places, 198 transitions, 1010 flow. Second operand 22 states and 2926 transitions. [2021-12-16 03:01:30,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 272 transitions, 2121 flow [2021-12-16 03:01:30,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 272 transitions, 2065 flow, removed 21 selfloop flow, removed 25 redundant places. [2021-12-16 03:01:30,437 INFO L242 Difference]: Finished difference. Result has 283 places, 211 transitions, 1238 flow [2021-12-16 03:01:30,437 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1238, PETRI_PLACES=283, PETRI_TRANSITIONS=211} [2021-12-16 03:01:30,438 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 126 predicate places. [2021-12-16 03:01:30,439 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 211 transitions, 1238 flow [2021-12-16 03:01:30,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:30,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:30,439 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:30,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-16 03:01:30,440 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:30,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1783627810, now seen corresponding path program 2 times [2021-12-16 03:01:30,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:30,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162628540] [2021-12-16 03:01:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:30,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:30,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:30,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162628540] [2021-12-16 03:01:30,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162628540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:30,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:30,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:30,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61961436] [2021-12-16 03:01:30,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:30,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:30,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:30,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:30,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:30,534 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:30,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 211 transitions, 1238 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:30,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:30,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:30,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:31,051 INFO L129 PetriNetUnfolder]: 399/1876 cut-off events. [2021-12-16 03:01:31,052 INFO L130 PetriNetUnfolder]: For 18583/18653 co-relation queries the response was YES. [2021-12-16 03:01:31,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8133 conditions, 1876 events. 399/1876 cut-off events. For 18583/18653 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 14294 event pairs, 246 based on Foata normal form. 8/1792 useless extension candidates. Maximal degree in co-relation 8044. Up to 702 conditions per place. [2021-12-16 03:01:31,072 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 122 selfloop transitions, 12 changer transitions 46/326 dead transitions. [2021-12-16 03:01:31,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 326 transitions, 2884 flow [2021-12-16 03:01:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-16 03:01:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-16 03:01:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4111 transitions. [2021-12-16 03:01:31,075 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621431219873934 [2021-12-16 03:01:31,075 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4111 transitions. [2021-12-16 03:01:31,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4111 transitions. [2021-12-16 03:01:31,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:31,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4111 transitions. [2021-12-16 03:01:31,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.61290322580646) internal successors, (4111), 31 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:31,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:31,081 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:31,081 INFO L186 Difference]: Start difference. First operand has 283 places, 211 transitions, 1238 flow. Second operand 31 states and 4111 transitions. [2021-12-16 03:01:31,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 326 transitions, 2884 flow [2021-12-16 03:01:31,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 326 transitions, 2362 flow, removed 261 selfloop flow, removed 12 redundant places. [2021-12-16 03:01:31,128 INFO L242 Difference]: Finished difference. Result has 314 places, 214 transitions, 1231 flow [2021-12-16 03:01:31,128 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1231, PETRI_PLACES=314, PETRI_TRANSITIONS=214} [2021-12-16 03:01:31,129 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 157 predicate places. [2021-12-16 03:01:31,129 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 214 transitions, 1231 flow [2021-12-16 03:01:31,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:31,129 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:31,129 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:31,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-16 03:01:31,129 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:31,130 INFO L85 PathProgramCache]: Analyzing trace with hash -412350402, now seen corresponding path program 3 times [2021-12-16 03:01:31,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:31,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713893629] [2021-12-16 03:01:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:31,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:31,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:31,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713893629] [2021-12-16 03:01:31,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713893629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:31,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:31,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:31,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225559522] [2021-12-16 03:01:31,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:31,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:31,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:31,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:31,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:31,269 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:31,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 214 transitions, 1231 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:31,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:31,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:31,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:31,846 INFO L129 PetriNetUnfolder]: 398/2005 cut-off events. [2021-12-16 03:01:31,846 INFO L130 PetriNetUnfolder]: For 18444/18514 co-relation queries the response was YES. [2021-12-16 03:01:31,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8420 conditions, 2005 events. 398/2005 cut-off events. For 18444/18514 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 15764 event pairs, 233 based on Foata normal form. 8/1932 useless extension candidates. Maximal degree in co-relation 8316. Up to 705 conditions per place. [2021-12-16 03:01:31,870 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 148 selfloop transitions, 10 changer transitions 46/350 dead transitions. [2021-12-16 03:01:31,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 350 transitions, 3355 flow [2021-12-16 03:01:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-16 03:01:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-16 03:01:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3982 transitions. [2021-12-16 03:01:31,873 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628352490421456 [2021-12-16 03:01:31,873 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3982 transitions. [2021-12-16 03:01:31,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3982 transitions. [2021-12-16 03:01:31,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:31,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3982 transitions. [2021-12-16 03:01:31,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.73333333333332) internal successors, (3982), 30 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:31,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:31,879 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:31,879 INFO L186 Difference]: Start difference. First operand has 314 places, 214 transitions, 1231 flow. Second operand 30 states and 3982 transitions. [2021-12-16 03:01:31,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 350 transitions, 3355 flow [2021-12-16 03:01:31,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 350 transitions, 2999 flow, removed 156 selfloop flow, removed 21 redundant places. [2021-12-16 03:01:31,929 INFO L242 Difference]: Finished difference. Result has 328 places, 218 transitions, 1327 flow [2021-12-16 03:01:31,930 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1327, PETRI_PLACES=328, PETRI_TRANSITIONS=218} [2021-12-16 03:01:31,930 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 171 predicate places. [2021-12-16 03:01:31,930 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 218 transitions, 1327 flow [2021-12-16 03:01:31,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:31,931 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:31,931 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:31,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-16 03:01:31,931 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:31,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:31,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1874127164, now seen corresponding path program 4 times [2021-12-16 03:01:31,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:31,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319509077] [2021-12-16 03:01:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:31,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:32,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:32,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319509077] [2021-12-16 03:01:32,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319509077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:32,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:32,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:32,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175537793] [2021-12-16 03:01:32,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:32,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:32,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:32,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:32,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:32,062 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:32,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 218 transitions, 1327 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:32,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:32,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:32,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:32,585 INFO L129 PetriNetUnfolder]: 395/1967 cut-off events. [2021-12-16 03:01:32,585 INFO L130 PetriNetUnfolder]: For 21746/21825 co-relation queries the response was YES. [2021-12-16 03:01:32,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8824 conditions, 1967 events. 395/1967 cut-off events. For 21746/21825 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 15241 event pairs, 270 based on Foata normal form. 10/1887 useless extension candidates. Maximal degree in co-relation 8711. Up to 816 conditions per place. [2021-12-16 03:01:32,611 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 22 changer transitions 23/287 dead transitions. [2021-12-16 03:01:32,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 287 transitions, 2677 flow [2021-12-16 03:01:32,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 03:01:32,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 03:01:32,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2021-12-16 03:01:32,617 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2021-12-16 03:01:32,617 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2021-12-16 03:01:32,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2021-12-16 03:01:32,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:32,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2021-12-16 03:01:32,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:32,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:32,622 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:32,622 INFO L186 Difference]: Start difference. First operand has 328 places, 218 transitions, 1327 flow. Second operand 19 states and 2529 transitions. [2021-12-16 03:01:32,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 287 transitions, 2677 flow [2021-12-16 03:01:32,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 287 transitions, 2395 flow, removed 140 selfloop flow, removed 21 redundant places. [2021-12-16 03:01:32,675 INFO L242 Difference]: Finished difference. Result has 316 places, 232 transitions, 1564 flow [2021-12-16 03:01:32,676 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1564, PETRI_PLACES=316, PETRI_TRANSITIONS=232} [2021-12-16 03:01:32,676 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2021-12-16 03:01:32,676 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 232 transitions, 1564 flow [2021-12-16 03:01:32,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:32,677 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:32,677 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:32,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-16 03:01:32,677 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:32,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:32,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1116634472, now seen corresponding path program 5 times [2021-12-16 03:01:32,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:32,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912515595] [2021-12-16 03:01:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:32,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:32,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:32,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912515595] [2021-12-16 03:01:32,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912515595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:32,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:32,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:32,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913737003] [2021-12-16 03:01:32,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:32,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:32,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:32,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:32,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:32,786 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:32,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 232 transitions, 1564 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:32,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:32,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:32,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:33,349 INFO L129 PetriNetUnfolder]: 440/2075 cut-off events. [2021-12-16 03:01:33,350 INFO L130 PetriNetUnfolder]: For 18549/18632 co-relation queries the response was YES. [2021-12-16 03:01:33,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9245 conditions, 2075 events. 440/2075 cut-off events. For 18549/18632 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16157 event pairs, 300 based on Foata normal form. 8/1992 useless extension candidates. Maximal degree in co-relation 9138. Up to 824 conditions per place. [2021-12-16 03:01:33,384 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 17 changer transitions 40/321 dead transitions. [2021-12-16 03:01:33,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 321 transitions, 3263 flow [2021-12-16 03:01:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-16 03:01:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-16 03:01:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3580 transitions. [2021-12-16 03:01:33,386 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620263942103023 [2021-12-16 03:01:33,386 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3580 transitions. [2021-12-16 03:01:33,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3580 transitions. [2021-12-16 03:01:33,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:33,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3580 transitions. [2021-12-16 03:01:33,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.59259259259258) internal successors, (3580), 27 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:33,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:33,391 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:33,392 INFO L186 Difference]: Start difference. First operand has 316 places, 232 transitions, 1564 flow. Second operand 27 states and 3580 transitions. [2021-12-16 03:01:33,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 321 transitions, 3263 flow [2021-12-16 03:01:33,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 321 transitions, 3036 flow, removed 92 selfloop flow, removed 8 redundant places. [2021-12-16 03:01:33,452 INFO L242 Difference]: Finished difference. Result has 348 places, 244 transitions, 1714 flow [2021-12-16 03:01:33,453 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1714, PETRI_PLACES=348, PETRI_TRANSITIONS=244} [2021-12-16 03:01:33,453 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 191 predicate places. [2021-12-16 03:01:33,453 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 244 transitions, 1714 flow [2021-12-16 03:01:33,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:33,454 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:33,454 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:33,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-16 03:01:33,454 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:33,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:33,455 INFO L85 PathProgramCache]: Analyzing trace with hash -810899648, now seen corresponding path program 6 times [2021-12-16 03:01:33,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:33,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442172952] [2021-12-16 03:01:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:33,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:33,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:33,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442172952] [2021-12-16 03:01:33,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442172952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:33,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:33,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:33,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256514610] [2021-12-16 03:01:33,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:33,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:33,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:33,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:33,578 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:33,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 244 transitions, 1714 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:33,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:33,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:33,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:34,168 INFO L129 PetriNetUnfolder]: 431/2024 cut-off events. [2021-12-16 03:01:34,168 INFO L130 PetriNetUnfolder]: For 22582/22669 co-relation queries the response was YES. [2021-12-16 03:01:34,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9651 conditions, 2024 events. 431/2024 cut-off events. For 22582/22669 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 15703 event pairs, 294 based on Foata normal form. 11/1942 useless extension candidates. Maximal degree in co-relation 9528. Up to 850 conditions per place. [2021-12-16 03:01:34,197 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 108 selfloop transitions, 33 changer transitions 36/323 dead transitions. [2021-12-16 03:01:34,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 323 transitions, 3541 flow [2021-12-16 03:01:34,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-16 03:01:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-16 03:01:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3312 transitions. [2021-12-16 03:01:34,199 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7613793103448275 [2021-12-16 03:01:34,199 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3312 transitions. [2021-12-16 03:01:34,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3312 transitions. [2021-12-16 03:01:34,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:34,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3312 transitions. [2021-12-16 03:01:34,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.48) internal successors, (3312), 25 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:34,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:34,204 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:34,204 INFO L186 Difference]: Start difference. First operand has 348 places, 244 transitions, 1714 flow. Second operand 25 states and 3312 transitions. [2021-12-16 03:01:34,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 323 transitions, 3541 flow [2021-12-16 03:01:34,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 323 transitions, 3255 flow, removed 143 selfloop flow, removed 16 redundant places. [2021-12-16 03:01:34,277 INFO L242 Difference]: Finished difference. Result has 357 places, 259 transitions, 2075 flow [2021-12-16 03:01:34,278 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2075, PETRI_PLACES=357, PETRI_TRANSITIONS=259} [2021-12-16 03:01:34,278 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 200 predicate places. [2021-12-16 03:01:34,278 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 259 transitions, 2075 flow [2021-12-16 03:01:34,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:34,279 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:34,279 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:34,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-16 03:01:34,279 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:34,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:34,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1086480404, now seen corresponding path program 7 times [2021-12-16 03:01:34,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:34,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876356185] [2021-12-16 03:01:34,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:34,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:34,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:34,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876356185] [2021-12-16 03:01:34,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876356185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:34,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:34,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:34,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622249860] [2021-12-16 03:01:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:34,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:34,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:34,378 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:34,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 259 transitions, 2075 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:34,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:34,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:34,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:35,072 INFO L129 PetriNetUnfolder]: 443/2050 cut-off events. [2021-12-16 03:01:35,072 INFO L130 PetriNetUnfolder]: For 22765/22852 co-relation queries the response was YES. [2021-12-16 03:01:35,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9913 conditions, 2050 events. 443/2050 cut-off events. For 22765/22852 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 16060 event pairs, 278 based on Foata normal form. 8/1961 useless extension candidates. Maximal degree in co-relation 9785. Up to 771 conditions per place. [2021-12-16 03:01:35,108 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 127 selfloop transitions, 25 changer transitions 40/338 dead transitions. [2021-12-16 03:01:35,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 338 transitions, 3842 flow [2021-12-16 03:01:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-16 03:01:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-16 03:01:35,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3449 transitions. [2021-12-16 03:01:35,112 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623784261715296 [2021-12-16 03:01:35,112 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3449 transitions. [2021-12-16 03:01:35,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3449 transitions. [2021-12-16 03:01:35,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:35,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3449 transitions. [2021-12-16 03:01:35,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.65384615384616) internal successors, (3449), 26 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:35,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:35,119 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:35,120 INFO L186 Difference]: Start difference. First operand has 357 places, 259 transitions, 2075 flow. Second operand 26 states and 3449 transitions. [2021-12-16 03:01:35,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 338 transitions, 3842 flow [2021-12-16 03:01:35,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 338 transitions, 3454 flow, removed 179 selfloop flow, removed 15 redundant places. [2021-12-16 03:01:35,243 INFO L242 Difference]: Finished difference. Result has 375 places, 268 transitions, 2154 flow [2021-12-16 03:01:35,244 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2154, PETRI_PLACES=375, PETRI_TRANSITIONS=268} [2021-12-16 03:01:35,244 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 218 predicate places. [2021-12-16 03:01:35,244 INFO L470 AbstractCegarLoop]: Abstraction has has 375 places, 268 transitions, 2154 flow [2021-12-16 03:01:35,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:35,245 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:35,245 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:35,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-16 03:01:35,245 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:35,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:35,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1320856534, now seen corresponding path program 8 times [2021-12-16 03:01:35,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:35,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779822838] [2021-12-16 03:01:35,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:35,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:35,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:35,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779822838] [2021-12-16 03:01:35,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779822838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:35,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:35,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:35,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694920512] [2021-12-16 03:01:35,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:35,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:35,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:35,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:35,381 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:35,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 268 transitions, 2154 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:35,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:35,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:35,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:36,077 INFO L129 PetriNetUnfolder]: 439/2093 cut-off events. [2021-12-16 03:01:36,077 INFO L130 PetriNetUnfolder]: For 24575/24666 co-relation queries the response was YES. [2021-12-16 03:01:36,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10088 conditions, 2093 events. 439/2093 cut-off events. For 24575/24666 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16532 event pairs, 283 based on Foata normal form. 10/2013 useless extension candidates. Maximal degree in co-relation 9951. Up to 843 conditions per place. [2021-12-16 03:01:36,109 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 127 selfloop transitions, 36 changer transitions 47/356 dead transitions. [2021-12-16 03:01:36,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 356 transitions, 3881 flow [2021-12-16 03:01:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-16 03:01:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-16 03:01:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2021-12-16 03:01:36,111 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2021-12-16 03:01:36,112 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2021-12-16 03:01:36,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2021-12-16 03:01:36,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:36,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2021-12-16 03:01:36,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:36,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:36,117 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:36,118 INFO L186 Difference]: Start difference. First operand has 375 places, 268 transitions, 2154 flow. Second operand 28 states and 3707 transitions. [2021-12-16 03:01:36,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 356 transitions, 3881 flow [2021-12-16 03:01:36,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 356 transitions, 3668 flow, removed 96 selfloop flow, removed 18 redundant places. [2021-12-16 03:01:36,208 INFO L242 Difference]: Finished difference. Result has 386 places, 268 transitions, 2206 flow [2021-12-16 03:01:36,209 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2049, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2206, PETRI_PLACES=386, PETRI_TRANSITIONS=268} [2021-12-16 03:01:36,210 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 229 predicate places. [2021-12-16 03:01:36,210 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 268 transitions, 2206 flow [2021-12-16 03:01:36,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:36,211 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:36,211 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:36,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-16 03:01:36,211 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:36,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1131958788, now seen corresponding path program 9 times [2021-12-16 03:01:36,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:36,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643059624] [2021-12-16 03:01:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:36,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:36,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:36,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643059624] [2021-12-16 03:01:36,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643059624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:36,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:36,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:36,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324765940] [2021-12-16 03:01:36,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:36,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:36,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:36,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:36,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:36,318 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:36,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 268 transitions, 2206 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:36,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:36,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:36,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:36,993 INFO L129 PetriNetUnfolder]: 431/2050 cut-off events. [2021-12-16 03:01:36,993 INFO L130 PetriNetUnfolder]: For 21245/21334 co-relation queries the response was YES. [2021-12-16 03:01:37,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9678 conditions, 2050 events. 431/2050 cut-off events. For 21245/21334 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16065 event pairs, 288 based on Foata normal form. 10/1968 useless extension candidates. Maximal degree in co-relation 9538. Up to 865 conditions per place. [2021-12-16 03:01:37,023 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 37 changer transitions 31/330 dead transitions. [2021-12-16 03:01:37,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 330 transitions, 3502 flow [2021-12-16 03:01:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:01:37,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:01:37,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2657 transitions. [2021-12-16 03:01:37,025 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635057471264368 [2021-12-16 03:01:37,025 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2657 transitions. [2021-12-16 03:01:37,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2657 transitions. [2021-12-16 03:01:37,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:37,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2657 transitions. [2021-12-16 03:01:37,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.85) internal successors, (2657), 20 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:37,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:37,029 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:37,029 INFO L186 Difference]: Start difference. First operand has 386 places, 268 transitions, 2206 flow. Second operand 20 states and 2657 transitions. [2021-12-16 03:01:37,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 330 transitions, 3502 flow [2021-12-16 03:01:37,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 330 transitions, 3292 flow, removed 66 selfloop flow, removed 22 redundant places. [2021-12-16 03:01:37,119 INFO L242 Difference]: Finished difference. Result has 372 places, 268 transitions, 2189 flow [2021-12-16 03:01:37,119 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2189, PETRI_PLACES=372, PETRI_TRANSITIONS=268} [2021-12-16 03:01:37,120 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 215 predicate places. [2021-12-16 03:01:37,120 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 268 transitions, 2189 flow [2021-12-16 03:01:37,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:37,120 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:37,120 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:37,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-16 03:01:37,120 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:37,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:37,121 INFO L85 PathProgramCache]: Analyzing trace with hash 983622208, now seen corresponding path program 10 times [2021-12-16 03:01:37,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:37,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483390620] [2021-12-16 03:01:37,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:37,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:37,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:37,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483390620] [2021-12-16 03:01:37,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483390620] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:37,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:37,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:37,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038502981] [2021-12-16 03:01:37,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:37,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:37,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:37,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:37,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:37,216 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:37,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 268 transitions, 2189 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:37,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:37,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:37,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:37,834 INFO L129 PetriNetUnfolder]: 415/2039 cut-off events. [2021-12-16 03:01:37,834 INFO L130 PetriNetUnfolder]: For 19923/20016 co-relation queries the response was YES. [2021-12-16 03:01:37,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9286 conditions, 2039 events. 415/2039 cut-off events. For 19923/20016 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16058 event pairs, 280 based on Foata normal form. 16/1965 useless extension candidates. Maximal degree in co-relation 9156. Up to 840 conditions per place. [2021-12-16 03:01:37,856 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 20 changer transitions 44/322 dead transitions. [2021-12-16 03:01:37,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 322 transitions, 3291 flow [2021-12-16 03:01:37,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 03:01:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-16 03:01:37,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3172 transitions. [2021-12-16 03:01:37,858 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7595785440613027 [2021-12-16 03:01:37,858 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3172 transitions. [2021-12-16 03:01:37,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3172 transitions. [2021-12-16 03:01:37,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:37,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3172 transitions. [2021-12-16 03:01:37,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.16666666666666) internal successors, (3172), 24 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:37,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:37,863 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:37,863 INFO L186 Difference]: Start difference. First operand has 372 places, 268 transitions, 2189 flow. Second operand 24 states and 3172 transitions. [2021-12-16 03:01:37,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 322 transitions, 3291 flow [2021-12-16 03:01:37,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 322 transitions, 3167 flow, removed 21 selfloop flow, removed 14 redundant places. [2021-12-16 03:01:37,935 INFO L242 Difference]: Finished difference. Result has 379 places, 247 transitions, 1855 flow [2021-12-16 03:01:37,935 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1855, PETRI_PLACES=379, PETRI_TRANSITIONS=247} [2021-12-16 03:01:37,936 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 222 predicate places. [2021-12-16 03:01:37,936 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 247 transitions, 1855 flow [2021-12-16 03:01:37,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:37,936 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:37,936 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:37,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-16 03:01:37,936 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:37,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:37,937 INFO L85 PathProgramCache]: Analyzing trace with hash 410279658, now seen corresponding path program 11 times [2021-12-16 03:01:37,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:37,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573837478] [2021-12-16 03:01:37,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:37,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:38,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:38,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573837478] [2021-12-16 03:01:38,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573837478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:38,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:38,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:38,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921227513] [2021-12-16 03:01:38,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:38,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:38,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:38,046 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:38,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 247 transitions, 1855 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:38,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:38,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:38,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:38,631 INFO L129 PetriNetUnfolder]: 414/1956 cut-off events. [2021-12-16 03:01:38,631 INFO L130 PetriNetUnfolder]: For 19938/20021 co-relation queries the response was YES. [2021-12-16 03:01:38,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9231 conditions, 1956 events. 414/1956 cut-off events. For 19938/20021 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 15112 event pairs, 291 based on Foata normal form. 10/1873 useless extension candidates. Maximal degree in co-relation 9098. Up to 840 conditions per place. [2021-12-16 03:01:38,659 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 30 changer transitions 27/303 dead transitions. [2021-12-16 03:01:38,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 303 transitions, 3116 flow [2021-12-16 03:01:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 03:01:38,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-16 03:01:38,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2021-12-16 03:01:38,661 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2021-12-16 03:01:38,661 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2021-12-16 03:01:38,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2021-12-16 03:01:38,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:38,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2021-12-16 03:01:38,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:38,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:38,666 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:38,666 INFO L186 Difference]: Start difference. First operand has 379 places, 247 transitions, 1855 flow. Second operand 22 states and 2919 transitions. [2021-12-16 03:01:38,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 303 transitions, 3116 flow [2021-12-16 03:01:38,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 303 transitions, 2880 flow, removed 52 selfloop flow, removed 23 redundant places. [2021-12-16 03:01:38,752 INFO L242 Difference]: Finished difference. Result has 356 places, 259 transitions, 2077 flow [2021-12-16 03:01:38,752 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2077, PETRI_PLACES=356, PETRI_TRANSITIONS=259} [2021-12-16 03:01:38,753 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 199 predicate places. [2021-12-16 03:01:38,753 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 259 transitions, 2077 flow [2021-12-16 03:01:38,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:38,753 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:38,753 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:38,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-16 03:01:38,753 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:38,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:38,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1916416534, now seen corresponding path program 12 times [2021-12-16 03:01:38,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:38,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402421576] [2021-12-16 03:01:38,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:38,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:38,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:38,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402421576] [2021-12-16 03:01:38,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402421576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:38,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:38,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:38,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418855426] [2021-12-16 03:01:38,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:38,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:38,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:38,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:38,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:38,866 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:38,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 259 transitions, 2077 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:38,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:38,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:38,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:39,422 INFO L129 PetriNetUnfolder]: 420/1976 cut-off events. [2021-12-16 03:01:39,423 INFO L130 PetriNetUnfolder]: For 18669/18751 co-relation queries the response was YES. [2021-12-16 03:01:39,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9186 conditions, 1976 events. 420/1976 cut-off events. For 18669/18751 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 15247 event pairs, 293 based on Foata normal form. 10/1893 useless extension candidates. Maximal degree in co-relation 9061. Up to 840 conditions per place. [2021-12-16 03:01:39,444 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 38 changer transitions 27/317 dead transitions. [2021-12-16 03:01:39,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 317 transitions, 3371 flow [2021-12-16 03:01:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:01:39,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:01:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2662 transitions. [2021-12-16 03:01:39,446 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649425287356322 [2021-12-16 03:01:39,446 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2662 transitions. [2021-12-16 03:01:39,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2662 transitions. [2021-12-16 03:01:39,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:39,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2662 transitions. [2021-12-16 03:01:39,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.1) internal successors, (2662), 20 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:39,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:39,450 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:39,450 INFO L186 Difference]: Start difference. First operand has 356 places, 259 transitions, 2077 flow. Second operand 20 states and 2662 transitions. [2021-12-16 03:01:39,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 317 transitions, 3371 flow [2021-12-16 03:01:39,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 317 transitions, 3133 flow, removed 111 selfloop flow, removed 5 redundant places. [2021-12-16 03:01:39,526 INFO L242 Difference]: Finished difference. Result has 372 places, 271 transitions, 2278 flow [2021-12-16 03:01:39,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2278, PETRI_PLACES=372, PETRI_TRANSITIONS=271} [2021-12-16 03:01:39,527 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 215 predicate places. [2021-12-16 03:01:39,527 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 271 transitions, 2278 flow [2021-12-16 03:01:39,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:39,528 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:39,528 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:39,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-16 03:01:39,528 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:39,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1123363222, now seen corresponding path program 13 times [2021-12-16 03:01:39,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:39,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416350404] [2021-12-16 03:01:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:39,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:39,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:39,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416350404] [2021-12-16 03:01:39,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416350404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:39,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:39,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:39,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428717334] [2021-12-16 03:01:39,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:39,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:39,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:39,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:39,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:39,650 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:39,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 271 transitions, 2278 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:39,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:39,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:39,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:40,249 INFO L129 PetriNetUnfolder]: 415/2023 cut-off events. [2021-12-16 03:01:40,249 INFO L130 PetriNetUnfolder]: For 19064/19144 co-relation queries the response was YES. [2021-12-16 03:01:40,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9218 conditions, 2023 events. 415/2023 cut-off events. For 19064/19144 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 15781 event pairs, 305 based on Foata normal form. 8/1938 useless extension candidates. Maximal degree in co-relation 9084. Up to 840 conditions per place. [2021-12-16 03:01:40,268 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 37 changer transitions 29/322 dead transitions. [2021-12-16 03:01:40,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 322 transitions, 3478 flow [2021-12-16 03:01:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-16 03:01:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-16 03:01:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2021-12-16 03:01:40,271 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2021-12-16 03:01:40,271 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2021-12-16 03:01:40,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2021-12-16 03:01:40,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:40,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2021-12-16 03:01:40,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:40,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:40,275 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:40,275 INFO L186 Difference]: Start difference. First operand has 372 places, 271 transitions, 2278 flow. Second operand 21 states and 2792 transitions. [2021-12-16 03:01:40,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 322 transitions, 3478 flow [2021-12-16 03:01:40,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 322 transitions, 3354 flow, removed 38 selfloop flow, removed 8 redundant places. [2021-12-16 03:01:40,345 INFO L242 Difference]: Finished difference. Result has 387 places, 278 transitions, 2458 flow [2021-12-16 03:01:40,346 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2191, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2458, PETRI_PLACES=387, PETRI_TRANSITIONS=278} [2021-12-16 03:01:40,346 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 230 predicate places. [2021-12-16 03:01:40,346 INFO L470 AbstractCegarLoop]: Abstraction has has 387 places, 278 transitions, 2458 flow [2021-12-16 03:01:40,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:40,347 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:40,347 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:40,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-16 03:01:40,347 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:40,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1516031106, now seen corresponding path program 14 times [2021-12-16 03:01:40,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:40,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714275905] [2021-12-16 03:01:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:40,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:40,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:40,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714275905] [2021-12-16 03:01:40,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714275905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:40,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:40,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:40,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046456589] [2021-12-16 03:01:40,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:40,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:40,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:40,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:40,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:40,449 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:40,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 278 transitions, 2458 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:40,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:40,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:40,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:41,101 INFO L129 PetriNetUnfolder]: 427/2055 cut-off events. [2021-12-16 03:01:41,101 INFO L130 PetriNetUnfolder]: For 19882/19964 co-relation queries the response was YES. [2021-12-16 03:01:41,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9509 conditions, 2055 events. 427/2055 cut-off events. For 19882/19964 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16106 event pairs, 310 based on Foata normal form. 8/1970 useless extension candidates. Maximal degree in co-relation 9369. Up to 843 conditions per place. [2021-12-16 03:01:41,130 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 114 selfloop transitions, 41 changer transitions 38/339 dead transitions. [2021-12-16 03:01:41,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 339 transitions, 3739 flow [2021-12-16 03:01:41,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 03:01:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-16 03:01:41,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2021-12-16 03:01:41,132 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2021-12-16 03:01:41,132 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2021-12-16 03:01:41,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2021-12-16 03:01:41,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:41,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2021-12-16 03:01:41,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:41,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:41,136 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:41,136 INFO L186 Difference]: Start difference. First operand has 387 places, 278 transitions, 2458 flow. Second operand 24 states and 3187 transitions. [2021-12-16 03:01:41,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 339 transitions, 3739 flow [2021-12-16 03:01:41,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 339 transitions, 3599 flow, removed 43 selfloop flow, removed 7 redundant places. [2021-12-16 03:01:41,222 INFO L242 Difference]: Finished difference. Result has 408 places, 283 transitions, 2592 flow [2021-12-16 03:01:41,222 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2592, PETRI_PLACES=408, PETRI_TRANSITIONS=283} [2021-12-16 03:01:41,222 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 251 predicate places. [2021-12-16 03:01:41,222 INFO L470 AbstractCegarLoop]: Abstraction has has 408 places, 283 transitions, 2592 flow [2021-12-16 03:01:41,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:41,223 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:41,223 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:41,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-16 03:01:41,223 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:41,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:41,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1791155866, now seen corresponding path program 15 times [2021-12-16 03:01:41,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:41,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12982927] [2021-12-16 03:01:41,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:41,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:41,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:41,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12982927] [2021-12-16 03:01:41,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12982927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:41,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:41,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:41,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393357813] [2021-12-16 03:01:41,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:41,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:41,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:41,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:41,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:41,342 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:41,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 283 transitions, 2592 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:41,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:41,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:41,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:41,936 INFO L129 PetriNetUnfolder]: 422/2026 cut-off events. [2021-12-16 03:01:41,936 INFO L130 PetriNetUnfolder]: For 20934/21016 co-relation queries the response was YES. [2021-12-16 03:01:41,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9534 conditions, 2026 events. 422/2026 cut-off events. For 20934/21016 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 15848 event pairs, 284 based on Foata normal form. 10/1944 useless extension candidates. Maximal degree in co-relation 9385. Up to 838 conditions per place. [2021-12-16 03:01:41,970 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 36 changer transitions 43/343 dead transitions. [2021-12-16 03:01:41,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 343 transitions, 3921 flow [2021-12-16 03:01:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 03:01:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-16 03:01:41,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2021-12-16 03:01:41,972 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2021-12-16 03:01:41,972 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2021-12-16 03:01:41,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2021-12-16 03:01:41,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:41,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2021-12-16 03:01:41,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:41,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:41,977 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:41,977 INFO L186 Difference]: Start difference. First operand has 408 places, 283 transitions, 2592 flow. Second operand 23 states and 3056 transitions. [2021-12-16 03:01:41,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 343 transitions, 3921 flow [2021-12-16 03:01:42,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 343 transitions, 3750 flow, removed 56 selfloop flow, removed 15 redundant places. [2021-12-16 03:01:42,074 INFO L242 Difference]: Finished difference. Result has 413 places, 282 transitions, 2595 flow [2021-12-16 03:01:42,075 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2595, PETRI_PLACES=413, PETRI_TRANSITIONS=282} [2021-12-16 03:01:42,075 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 256 predicate places. [2021-12-16 03:01:42,075 INFO L470 AbstractCegarLoop]: Abstraction has has 413 places, 282 transitions, 2595 flow [2021-12-16 03:01:42,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:42,076 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:42,076 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:42,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-16 03:01:42,076 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:42,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:42,076 INFO L85 PathProgramCache]: Analyzing trace with hash -412994664, now seen corresponding path program 16 times [2021-12-16 03:01:42,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:42,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816366145] [2021-12-16 03:01:42,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:42,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:42,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:42,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816366145] [2021-12-16 03:01:42,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816366145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:42,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:42,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:42,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878818051] [2021-12-16 03:01:42,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:42,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:42,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:42,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:42,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:42,198 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:42,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 282 transitions, 2595 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:42,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:42,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:42,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:42,762 INFO L129 PetriNetUnfolder]: 404/1992 cut-off events. [2021-12-16 03:01:42,762 INFO L130 PetriNetUnfolder]: For 19870/19952 co-relation queries the response was YES. [2021-12-16 03:01:42,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9146 conditions, 1992 events. 404/1992 cut-off events. For 19870/19952 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 15575 event pairs, 304 based on Foata normal form. 8/1909 useless extension candidates. Maximal degree in co-relation 8996. Up to 835 conditions per place. [2021-12-16 03:01:42,782 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 25 changer transitions 36/313 dead transitions. [2021-12-16 03:01:42,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 313 transitions, 3339 flow [2021-12-16 03:01:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:01:42,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:01:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2658 transitions. [2021-12-16 03:01:42,784 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637931034482759 [2021-12-16 03:01:42,785 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2658 transitions. [2021-12-16 03:01:42,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2658 transitions. [2021-12-16 03:01:42,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:42,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2658 transitions. [2021-12-16 03:01:42,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.9) internal successors, (2658), 20 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:42,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:42,789 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:42,789 INFO L186 Difference]: Start difference. First operand has 413 places, 282 transitions, 2595 flow. Second operand 20 states and 2658 transitions. [2021-12-16 03:01:42,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 313 transitions, 3339 flow [2021-12-16 03:01:42,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 313 transitions, 3137 flow, removed 39 selfloop flow, removed 22 redundant places. [2021-12-16 03:01:42,869 INFO L242 Difference]: Finished difference. Result has 403 places, 264 transitions, 2192 flow [2021-12-16 03:01:42,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2192, PETRI_PLACES=403, PETRI_TRANSITIONS=264} [2021-12-16 03:01:42,869 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 246 predicate places. [2021-12-16 03:01:42,869 INFO L470 AbstractCegarLoop]: Abstraction has has 403 places, 264 transitions, 2192 flow [2021-12-16 03:01:42,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:42,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:42,870 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:42,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-16 03:01:42,870 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:42,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:42,871 INFO L85 PathProgramCache]: Analyzing trace with hash 374873780, now seen corresponding path program 17 times [2021-12-16 03:01:42,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:42,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088312626] [2021-12-16 03:01:42,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:42,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:42,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:42,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088312626] [2021-12-16 03:01:42,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088312626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:42,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:42,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:42,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675437768] [2021-12-16 03:01:42,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:42,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:42,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:42,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:42,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:42,975 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:42,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 264 transitions, 2192 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:42,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:42,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:42,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:43,527 INFO L129 PetriNetUnfolder]: 399/1932 cut-off events. [2021-12-16 03:01:43,527 INFO L130 PetriNetUnfolder]: For 18581/18663 co-relation queries the response was YES. [2021-12-16 03:01:43,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8810 conditions, 1932 events. 399/1932 cut-off events. For 18581/18663 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14934 event pairs, 288 based on Foata normal form. 10/1851 useless extension candidates. Maximal degree in co-relation 8669. Up to 835 conditions per place. [2021-12-16 03:01:43,557 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 99 selfloop transitions, 21 changer transitions 34/300 dead transitions. [2021-12-16 03:01:43,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 300 transitions, 2989 flow [2021-12-16 03:01:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:01:43,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:01:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2656 transitions. [2021-12-16 03:01:43,559 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2021-12-16 03:01:43,559 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2656 transitions. [2021-12-16 03:01:43,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2656 transitions. [2021-12-16 03:01:43,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:43,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2656 transitions. [2021-12-16 03:01:43,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.8) internal successors, (2656), 20 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:43,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:43,563 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:43,563 INFO L186 Difference]: Start difference. First operand has 403 places, 264 transitions, 2192 flow. Second operand 20 states and 2656 transitions. [2021-12-16 03:01:43,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 300 transitions, 2989 flow [2021-12-16 03:01:43,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 300 transitions, 2801 flow, removed 24 selfloop flow, removed 22 redundant places. [2021-12-16 03:01:43,647 INFO L242 Difference]: Finished difference. Result has 383 places, 253 transitions, 1935 flow [2021-12-16 03:01:43,647 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2049, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1935, PETRI_PLACES=383, PETRI_TRANSITIONS=253} [2021-12-16 03:01:43,648 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 226 predicate places. [2021-12-16 03:01:43,648 INFO L470 AbstractCegarLoop]: Abstraction has has 383 places, 253 transitions, 1935 flow [2021-12-16 03:01:43,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:43,648 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:43,648 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:43,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-16 03:01:43,648 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:43,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:43,649 INFO L85 PathProgramCache]: Analyzing trace with hash 541145948, now seen corresponding path program 18 times [2021-12-16 03:01:43,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:43,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624938278] [2021-12-16 03:01:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:43,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:43,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:43,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624938278] [2021-12-16 03:01:43,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624938278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:43,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:43,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:43,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060993518] [2021-12-16 03:01:43,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:43,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:43,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:43,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:43,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:43,768 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:43,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 253 transitions, 1935 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:43,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:43,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:43,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:44,340 INFO L129 PetriNetUnfolder]: 383/1883 cut-off events. [2021-12-16 03:01:44,340 INFO L130 PetriNetUnfolder]: For 17360/17442 co-relation queries the response was YES. [2021-12-16 03:01:44,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8355 conditions, 1883 events. 383/1883 cut-off events. For 17360/17442 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14379 event pairs, 276 based on Foata normal form. 10/1804 useless extension candidates. Maximal degree in co-relation 8220. Up to 814 conditions per place. [2021-12-16 03:01:44,367 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 6 changer transitions 38/279 dead transitions. [2021-12-16 03:01:44,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 279 transitions, 2514 flow [2021-12-16 03:01:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 03:01:44,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 03:01:44,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2516 transitions. [2021-12-16 03:01:44,368 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610405323653963 [2021-12-16 03:01:44,369 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2516 transitions. [2021-12-16 03:01:44,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2516 transitions. [2021-12-16 03:01:44,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:44,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2516 transitions. [2021-12-16 03:01:44,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 132.42105263157896) internal successors, (2516), 19 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:44,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:44,372 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:44,372 INFO L186 Difference]: Start difference. First operand has 383 places, 253 transitions, 1935 flow. Second operand 19 states and 2516 transitions. [2021-12-16 03:01:44,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 279 transitions, 2514 flow [2021-12-16 03:01:44,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 279 transitions, 2384 flow, removed 24 selfloop flow, removed 23 redundant places. [2021-12-16 03:01:44,444 INFO L242 Difference]: Finished difference. Result has 364 places, 228 transitions, 1501 flow [2021-12-16 03:01:44,444 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1501, PETRI_PLACES=364, PETRI_TRANSITIONS=228} [2021-12-16 03:01:44,444 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 207 predicate places. [2021-12-16 03:01:44,444 INFO L470 AbstractCegarLoop]: Abstraction has has 364 places, 228 transitions, 1501 flow [2021-12-16 03:01:44,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:44,445 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:44,445 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:44,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-16 03:01:44,445 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1982863374, now seen corresponding path program 19 times [2021-12-16 03:01:44,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:44,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625945867] [2021-12-16 03:01:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:44,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:44,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:44,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625945867] [2021-12-16 03:01:44,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625945867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:44,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:44,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:44,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347967013] [2021-12-16 03:01:44,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:44,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:44,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:44,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:44,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:44,555 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:44,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 228 transitions, 1501 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:44,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:44,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:44,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:45,145 INFO L129 PetriNetUnfolder]: 397/1915 cut-off events. [2021-12-16 03:01:45,145 INFO L130 PetriNetUnfolder]: For 17629/17704 co-relation queries the response was YES. [2021-12-16 03:01:45,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8550 conditions, 1915 events. 397/1915 cut-off events. For 17629/17704 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14718 event pairs, 261 based on Foata normal form. 8/1836 useless extension candidates. Maximal degree in co-relation 8425. Up to 755 conditions per place. [2021-12-16 03:01:45,169 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 30 changer transitions 38/321 dead transitions. [2021-12-16 03:01:45,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 321 transitions, 3193 flow [2021-12-16 03:01:45,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-16 03:01:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-16 03:01:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3703 transitions. [2021-12-16 03:01:45,172 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2021-12-16 03:01:45,172 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3703 transitions. [2021-12-16 03:01:45,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3703 transitions. [2021-12-16 03:01:45,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:45,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3703 transitions. [2021-12-16 03:01:45,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.25) internal successors, (3703), 28 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:45,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:45,177 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:45,177 INFO L186 Difference]: Start difference. First operand has 364 places, 228 transitions, 1501 flow. Second operand 28 states and 3703 transitions. [2021-12-16 03:01:45,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 321 transitions, 3193 flow [2021-12-16 03:01:45,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 321 transitions, 3015 flow, removed 38 selfloop flow, removed 20 redundant places. [2021-12-16 03:01:45,252 INFO L242 Difference]: Finished difference. Result has 352 places, 243 transitions, 1795 flow [2021-12-16 03:01:45,252 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1795, PETRI_PLACES=352, PETRI_TRANSITIONS=243} [2021-12-16 03:01:45,253 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 195 predicate places. [2021-12-16 03:01:45,253 INFO L470 AbstractCegarLoop]: Abstraction has has 352 places, 243 transitions, 1795 flow [2021-12-16 03:01:45,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:45,253 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:45,254 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:45,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-16 03:01:45,254 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:45,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:45,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1665509994, now seen corresponding path program 20 times [2021-12-16 03:01:45,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:45,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471480443] [2021-12-16 03:01:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:45,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:45,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:45,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471480443] [2021-12-16 03:01:45,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471480443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:45,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:45,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:45,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414569597] [2021-12-16 03:01:45,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:45,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:45,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:45,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:45,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:45,380 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:45,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 243 transitions, 1795 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:45,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:45,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:45,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:46,025 INFO L129 PetriNetUnfolder]: 398/1902 cut-off events. [2021-12-16 03:01:46,025 INFO L130 PetriNetUnfolder]: For 17058/17135 co-relation queries the response was YES. [2021-12-16 03:01:46,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8650 conditions, 1902 events. 398/1902 cut-off events. For 17058/17135 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14549 event pairs, 268 based on Foata normal form. 8/1816 useless extension candidates. Maximal degree in co-relation 8522. Up to 762 conditions per place. [2021-12-16 03:01:46,051 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 34 changer transitions 35/315 dead transitions. [2021-12-16 03:01:46,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 315 transitions, 3328 flow [2021-12-16 03:01:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-16 03:01:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-16 03:01:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2021-12-16 03:01:46,053 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2021-12-16 03:01:46,053 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2021-12-16 03:01:46,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2021-12-16 03:01:46,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:46,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2021-12-16 03:01:46,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:46,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:46,058 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:46,058 INFO L186 Difference]: Start difference. First operand has 352 places, 243 transitions, 1795 flow. Second operand 26 states and 3446 transitions. [2021-12-16 03:01:46,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 315 transitions, 3328 flow [2021-12-16 03:01:46,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 315 transitions, 3139 flow, removed 75 selfloop flow, removed 15 redundant places. [2021-12-16 03:01:46,121 INFO L242 Difference]: Finished difference. Result has 365 places, 257 transitions, 2125 flow [2021-12-16 03:01:46,121 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2125, PETRI_PLACES=365, PETRI_TRANSITIONS=257} [2021-12-16 03:01:46,121 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2021-12-16 03:01:46,121 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 257 transitions, 2125 flow [2021-12-16 03:01:46,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:46,122 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:46,122 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:46,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-16 03:01:46,122 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:46,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:46,123 INFO L85 PathProgramCache]: Analyzing trace with hash 471199668, now seen corresponding path program 21 times [2021-12-16 03:01:46,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:46,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021043780] [2021-12-16 03:01:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:46,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:46,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:46,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021043780] [2021-12-16 03:01:46,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021043780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:46,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:46,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:46,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789312328] [2021-12-16 03:01:46,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:46,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:46,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:46,245 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:46,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 257 transitions, 2125 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:46,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:46,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:46,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:46,910 INFO L129 PetriNetUnfolder]: 394/1902 cut-off events. [2021-12-16 03:01:46,910 INFO L130 PetriNetUnfolder]: For 18737/18814 co-relation queries the response was YES. [2021-12-16 03:01:46,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8849 conditions, 1902 events. 394/1902 cut-off events. For 18737/18814 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14599 event pairs, 269 based on Foata normal form. 8/1817 useless extension candidates. Maximal degree in co-relation 8714. Up to 760 conditions per place. [2021-12-16 03:01:46,936 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 36 changer transitions 39/325 dead transitions. [2021-12-16 03:01:46,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 325 transitions, 3582 flow [2021-12-16 03:01:46,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-16 03:01:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-16 03:01:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3575 transitions. [2021-12-16 03:01:46,938 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609621115368241 [2021-12-16 03:01:46,938 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3575 transitions. [2021-12-16 03:01:46,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3575 transitions. [2021-12-16 03:01:46,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:46,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3575 transitions. [2021-12-16 03:01:46,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.40740740740742) internal successors, (3575), 27 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:46,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:46,943 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:46,943 INFO L186 Difference]: Start difference. First operand has 365 places, 257 transitions, 2125 flow. Second operand 27 states and 3575 transitions. [2021-12-16 03:01:46,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 325 transitions, 3582 flow [2021-12-16 03:01:47,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 325 transitions, 3312 flow, removed 115 selfloop flow, removed 16 redundant places. [2021-12-16 03:01:47,027 INFO L242 Difference]: Finished difference. Result has 378 places, 260 transitions, 2185 flow [2021-12-16 03:01:47,027 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2185, PETRI_PLACES=378, PETRI_TRANSITIONS=260} [2021-12-16 03:01:47,027 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 221 predicate places. [2021-12-16 03:01:47,027 INFO L470 AbstractCegarLoop]: Abstraction has has 378 places, 260 transitions, 2185 flow [2021-12-16 03:01:47,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:47,028 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:47,028 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:47,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-16 03:01:47,028 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:47,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:47,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1815556972, now seen corresponding path program 22 times [2021-12-16 03:01:47,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:47,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50903222] [2021-12-16 03:01:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:47,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:47,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50903222] [2021-12-16 03:01:47,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50903222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:47,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:47,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:47,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422907239] [2021-12-16 03:01:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:47,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:47,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:47,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:47,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:47,132 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:47,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 260 transitions, 2185 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:47,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:47,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:47,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:47,741 INFO L129 PetriNetUnfolder]: 387/1867 cut-off events. [2021-12-16 03:01:47,741 INFO L130 PetriNetUnfolder]: For 18119/18196 co-relation queries the response was YES. [2021-12-16 03:01:47,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8660 conditions, 1867 events. 387/1867 cut-off events. For 18119/18196 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14232 event pairs, 259 based on Foata normal form. 8/1787 useless extension candidates. Maximal degree in co-relation 8520. Up to 762 conditions per place. [2021-12-16 03:01:47,770 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 39 changer transitions 31/325 dead transitions. [2021-12-16 03:01:47,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 325 transitions, 3506 flow [2021-12-16 03:01:47,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 03:01:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-16 03:01:47,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2021-12-16 03:01:47,772 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2021-12-16 03:01:47,772 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2021-12-16 03:01:47,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2021-12-16 03:01:47,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:47,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2021-12-16 03:01:47,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:47,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:47,777 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:47,777 INFO L186 Difference]: Start difference. First operand has 378 places, 260 transitions, 2185 flow. Second operand 22 states and 2920 transitions. [2021-12-16 03:01:47,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 325 transitions, 3506 flow [2021-12-16 03:01:47,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 325 transitions, 3248 flow, removed 91 selfloop flow, removed 19 redundant places. [2021-12-16 03:01:47,860 INFO L242 Difference]: Finished difference. Result has 374 places, 267 transitions, 2277 flow [2021-12-16 03:01:47,860 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2277, PETRI_PLACES=374, PETRI_TRANSITIONS=267} [2021-12-16 03:01:47,860 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 217 predicate places. [2021-12-16 03:01:47,860 INFO L470 AbstractCegarLoop]: Abstraction has has 374 places, 267 transitions, 2277 flow [2021-12-16 03:01:47,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:47,861 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:47,861 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:47,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-16 03:01:47,861 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:47,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:47,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1369234436, now seen corresponding path program 23 times [2021-12-16 03:01:47,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:47,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784779228] [2021-12-16 03:01:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:47,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:47,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:47,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784779228] [2021-12-16 03:01:47,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784779228] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:47,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:47,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:47,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415089323] [2021-12-16 03:01:47,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:47,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:47,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:47,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:47,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:47,957 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:47,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 267 transitions, 2277 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:47,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:47,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:47,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:48,623 INFO L129 PetriNetUnfolder]: 391/1886 cut-off events. [2021-12-16 03:01:48,623 INFO L130 PetriNetUnfolder]: For 17026/17103 co-relation queries the response was YES. [2021-12-16 03:01:48,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8685 conditions, 1886 events. 391/1886 cut-off events. For 17026/17103 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14454 event pairs, 264 based on Foata normal form. 8/1802 useless extension candidates. Maximal degree in co-relation 8551. Up to 764 conditions per place. [2021-12-16 03:01:48,645 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 46 changer transitions 30/325 dead transitions. [2021-12-16 03:01:48,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 325 transitions, 3498 flow [2021-12-16 03:01:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-16 03:01:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-16 03:01:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2021-12-16 03:01:48,647 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2021-12-16 03:01:48,647 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2021-12-16 03:01:48,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2021-12-16 03:01:48,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:48,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2021-12-16 03:01:48,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:48,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:48,651 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:48,651 INFO L186 Difference]: Start difference. First operand has 374 places, 267 transitions, 2277 flow. Second operand 21 states and 2792 transitions. [2021-12-16 03:01:48,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 325 transitions, 3498 flow [2021-12-16 03:01:48,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 325 transitions, 3383 flow, removed 42 selfloop flow, removed 7 redundant places. [2021-12-16 03:01:48,739 INFO L242 Difference]: Finished difference. Result has 388 places, 277 transitions, 2525 flow [2021-12-16 03:01:48,739 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2525, PETRI_PLACES=388, PETRI_TRANSITIONS=277} [2021-12-16 03:01:48,739 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 231 predicate places. [2021-12-16 03:01:48,740 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 277 transitions, 2525 flow [2021-12-16 03:01:48,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:48,740 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:01:48,740 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:01:48,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-16 03:01:48,741 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:01:48,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:01:48,741 INFO L85 PathProgramCache]: Analyzing trace with hash 638506070, now seen corresponding path program 24 times [2021-12-16 03:01:48,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:01:48,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600413665] [2021-12-16 03:01:48,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:01:48,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:01:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:01:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:01:48,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:01:48,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600413665] [2021-12-16 03:01:48,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600413665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:01:48,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:01:48,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:01:48,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148235097] [2021-12-16 03:01:48,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:01:48,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:01:48,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:01:48,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:01:48,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:01:48,843 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-16 03:01:48,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 277 transitions, 2525 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:48,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:01:48,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-16 03:01:48,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:01:49,460 INFO L129 PetriNetUnfolder]: 387/1879 cut-off events. [2021-12-16 03:01:49,460 INFO L130 PetriNetUnfolder]: For 17221/17298 co-relation queries the response was YES. [2021-12-16 03:01:49,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 1879 events. 387/1879 cut-off events. For 17221/17298 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14388 event pairs, 265 based on Foata normal form. 8/1794 useless extension candidates. Maximal degree in co-relation 8601. Up to 762 conditions per place. [2021-12-16 03:01:49,485 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 111 selfloop transitions, 41 changer transitions 31/329 dead transitions. [2021-12-16 03:01:49,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 329 transitions, 3723 flow [2021-12-16 03:01:49,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 03:01:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-16 03:01:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2021-12-16 03:01:49,487 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2021-12-16 03:01:49,488 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2021-12-16 03:01:49,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2021-12-16 03:01:49,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:01:49,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2021-12-16 03:01:49,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:49,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:49,492 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:01:49,492 INFO L186 Difference]: Start difference. First operand has 388 places, 277 transitions, 2525 flow. Second operand 22 states and 2923 transitions. [2021-12-16 03:01:49,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 329 transitions, 3723 flow